I have no problem with negative responses. Life would be boring if everyone agreed with you.

I do have a problem with people being outright rude, sarcastic or making assumptions to cast folks in a negative light (the last one I know I'm bad with and trying to improve... basically adopting a "think before I post" mentality), and that's happening a lot of late.
Also, I didn't realise the US teaching system was getting that bad with the use of language/words/terminology/etc. I've got a friend who works in the UK teaching system and she's been saying basically the same thing. They're constantly getting new guidance on what words to use/not use and even she said it's just getting silly now... this is a woman in her 20's as well so there's no reason for her to be as jaded as those of us WAY in our 30's and beyond.
You do raise an interesting point regarding placeholder systems though. We don't always know what is and isn't a placeholder system in the game. I was pretty sure that the Wellness and Skill systems were solidified, as an example, but I knew the vehicle system was going to get overhauled due to all of the issues with bikes randomly disappearing into the ground. I believe that has been a particular bugbear for the dev team to sort out.
If at all possible, it might be handy to know what is basically going to stay (aside from tweaks) and what is currently a placeholder once the latest build is out for folks to play with. That way we know what parts the devs might want feedback on (placeholder systems are a good place to gather feedback if wanted) and what parts need outright bug reports for fixing things.