We do give a f, @JohnnyWylder .
But these servers are crap. What you ask is legit, but not reasonable under these circumstances. You ask for more thralls. If devs grant your wish everyone will get them and the servers will perform even worse. Why not asking to build limitlessly? Why not ask to decorate endlessly? Everyone has their preferences.
It’s easier and less impacting to cap the number of thralls than, let’s say, chests or building pieces. It’s easier for the player to plan ahead. But there are rules for how you build and decorate. Function before aesthetics. The same goes for thralls.
Thralls are my thing in this game, but I would prefer having them capped at 20 whilst having a decent AI and a lot of functions, than having 500 manequins.