Each one of us has experiences and they are meaningful to us individuality. They do not speak for the majority by experience alone. What this means is that claims such as "I don't know anyone who has an issue with this" really has no weight in this discussion. Just because someone has not personally heard discourse does not give them the ground to claim few or no one is really taking issue with it. Echo chambers don't always reflect reality outside their little safe spaces. That it is implemented in other games is somewhat meaningless information. What works in one game doesn't always work with another.
People like me don't like to post here. Our thoughts often get belittled as people seemingly devalue our thoughts by claiming we simply want a game that is too easy, or we don't want challenge. Many people want challenge. That's what makes the game fun, I presume? I challenge people who insist on changes to make any game "harder" to consider if they are asking because it is a meaningful addition to the game, or if it is remedying the problem they created for themselves because they have been playing the game so long that it lacks the original luster.
The idea of food spoilage had massive implications for multiplayer. This is already the game that thinks that one solution to being poisoned by food that may have been served by a Master Chief (with all 5 points!) is to eat more food. I'd laugh save it's a waste of food and aggravating after all the effort in multiplayer to get the farm up and for looters to bring back the correct canned goods. Don't worry, you can always pop a pill (vitamins is it?) before eating because that totally makes sense. Or you could spend precious points into Iron gut....or just eat canned food. Save now every other vending machine is just wrench fodder.
This is also the game that has made it a requirement to use rotten flesh for farms (I see no issue with that), and it's a collective effort multiplayer to put a community farm up managed by those who either specced into it, or found the right schematics (The RNG gods must have happy). The solution if there isn't enough to go around especially if not everyone is cozy with each other is to tell the people running the server its their responsibility to adjust the server settings. Okay so that's how it is right? Oh wait, now this is the game that people are considering putting in FOOD SPOILAGE.
That's right, after you put the effort into making a farm and wrestling the canned food out of your player's hands, your reward is food that not only has a chance to make you puke regardless of the skill of the one who made it, but now progressively spoils and can make you puke more, and possibly other side effects? Oh the food has special powers, so it makes the risk worth it?
For multiplayer this means you have to consider how many people need food per play-through, and try to not make too much beyond that. If any food is made you better hope that no one logs in after everyone else is gone dealing with life. Would suck to log in and that meat spoiled because of one person. Speaking of which what happens to the food people carry on person? Does that spoil while they are logged out and others are still playing, advancing time? How does that work? Let me tell you a secret. If you don't make the food spoil in inventory you will have people whining a bit claiming that is cheesing a mechanic. So what else? We could get electricity powering containers to refrigerate food to lower spoilage. That means prioritizing your electricity and parts to a fridge over being more mobile, or getting stuff up to build your Horde Base. This is where this becomes a little bit of a sore thumb. Right now the best solution to Horde on multiplayer is run and gun on your bike (which many people on this forum raged against in the past as a viable mechanic) to building separate bases so you don't get overwhelmed on Horde Night by Demolishers or lag. Mechanical parts get used up quickly as well as other resources. It's going to be another strain to consider powering your boxes to keep food from spoiling unless a really careful re balance for multiplayer is done.
I have a better idea than this. Don't do it. It's a lot headache ultimately for a bit of realism that isn't needed. It's time spent re-balancing many things that could be used to make something more dynamic. Or, at least make sure to branch out fully with well thought changes/new implementations. Instead you could tie the food poisoning to cooking skill. The higher the skill the cooker has, the less food poisoning chance. Then add in the ability to salt and dry meat, and jar/can your farmed goods to prolong their use. Add salt mining, and new books to the game, as well as a new cooking mechanism for meat that dries/preserves it. You can have debuffs such as eating salted preserved foods causes you to lose some hydration so you have to drink more. Canned/jarred foods may not have a high satiety. Maybe high sugar foods make you lose some stamina if you eat too much of it. The Pimps can do better than "Food spoilage". Unless I see a full plan before implemented I don't want to see it at all. We don't need another adding a borked system that will be fixed eventually with balancing and more additions.