The real problem is that some legitimate strategies work really well and people start using them to the exclusion of anything else and become bored and refer to them as "exploits" that should be nerfed all so they can be challenged again. The devs may or may not agree with that. But if they decide to "cop out" and retain some of those strategies in the game that are not software exploits but are simply effective methods of playing, I submit that it is good design philosophy because it gives more choices to players who haven't self-limited themselves by only doing those things they perceive as the most efficient and effective.
False, due to even worse choice of wording.
The problem comes when you develop a game and insert large game-changing features without considering the impact they will have on your existing large game features. The cop out is trying to play the card that players should have freedom when the reality is that either nobody bothered to think about it, or they simply failed to foresee the potential issues of just throwing features into the game.
For example... tower defense during a blood moon horde. Great idea in a voxel world. A game in itself. Then you add fast and strong vehicles and let a couple years go by without addressing the obvious issue and allow your players to accept using your new feature as a "legitimate strategy" to bypass the existing major game feature, until you later realize something should be done about it.
It is a legitimate action to jump into a vehicle and drive around. The problem here is that it is not a strategy. The effort required in the game to accomplish these results with a vehicle is minimal. Such an action cannot be deemed a "legitimate strategy" and therefore doesn't even fit into any logic someone could attempt to use to argue its existence, even using the player freedom card. Some people can complain all they want, but TFP agrees... it had to be changed some way.
The same goes for swimming safely in a lake all night during the horde. It was not a strategy and therefore has no place in the game. Some people can complain all they want, but TFP agrees... it had to be changed some way.
Here's some more with a current issue in the game.
People love those ramps where zombies just fall off at the end and loop around and repeat endlessly. Sorry, it might be a legitimate action to build it, but it's not a legitimate strategy and it has no place in a game. The AI shouldn't even be taking that path to begin with if they cannot reach you.
A strategy that falls into the scope of the gameplay and adds to the freedom of choice of using it, would be if you had a ramp that actually pathed to you, but along the path you have a junk sledge (or other pushing traps that do not exist for some reason), that push the zombies off the ramp so that they can take more damage from other traps or by shooting them while they are on their way back to the ramp path.