No. Those need to be removed. That's the point. They are killing them game with those mechanics. They need to remove the cheeses and make enemies' stats more what they should be to balance the game more.
Of course the bad rules and cheese should be removed.
If the AI would use them like the players do it would perfectly highlight just how bad the homebrew is and why it needs to be removed.
Enemies actively positioning themselves to backstab and shove PCs off a ledge every turn. Using their invisibility potions to set up one turn party wipes with double surprise rounds. Give them pigs heads and cheese wheels, those are just mundane food items. All of this would be perfectly fair within the combat system but imagine the cry of frustration from players that would follow.
If there ever will be any form of PvP in multiplayer, the cheese simply has to go. All of it. The combat system needs to be solid and fair.
