If everybody used mechanics in the same way then there wouldn't be a divide in skill between the playerbase as everyone would just do the same thing. Most of the fun of the game is seeing new changes and seeing how to best use them, sometimes in cheesy ways. Homes weren't "intended" to be used as they are used, but it's how they are best utilized and so get used like that. Nearly anything that is unbalanced in this game is due to people using mechanics in a way that is better than "intended."
I'm also pretty positive resetting 24 hours after oop wasn't considered cheating that whole time palem. Your other examples are also mostly unrelated, as they don't exist to deter people from cheating, but to provide mechanics to fill the gulf after something was made illegal. Fake wars provided a legitimate mechanic that made the game better(while providing others that made it worse). eowcf and fort replace what's good in them so that you can remove what's bad. Similarly, invites replace something good that was taken away when trading was made illegal, so that you can remove the part that was bad. Fake warring, xlogging, and account trading were also all explicitly stated to be illegal BEFORE actioning people for it, not retrospectively.
edit: i'd also add that there are currently mechanics that in most people's eyes are far more "exploitative" but whch have been deemed perfectly legal, such as defecting, suicide, and then getting farmed by original kd. It's still not even clear here what is the legal course of action. OP sent aid and clearly can't reset after 24 hours(or else he'll be freezed out of account and all kd will lose 30% of military). If he waits 48 hours is he ok? Can he not reset for this age now?
The issue is we have a game where the central premise is that there will be so many mechanics present at a time that some people can find better ways to exploit the ages mechanics and gain advantages over the competition. Within that environment we have most things that aren't explicitly stated to be illigal "left to the community" , then a smaller subset of the exploits get made illegal in the middle of the age or are changed within the game. Then you have an even smaller subset which are actioned capriciously in a retroactive manner.