Clearly some people here really enjoy improving their gameplay and I don't see nuffin wrong with that. You can win in Civ 6 at the highest diff with just about any strategy, playing entirely "suboptimally" and roleplaying for fun. I've done that, too. But it's not satisfying to me anymore at all. The knowledge that any game, even on Deity, is decided by T50 pretty much means that the only way I can find challenge in this game at all is by improving myself.
Civ 6 is also pretty much just applied maths, because it is one of the few games with zero mechanical skill involved, and I really like figuring these kinds of things out. A map is like a riddle. Many ways to solve it, some are more satisfying than others.
I'm not jumping into roleplaying threads and telling people to play this way or that way, and I don't understand why that courtesy can't be extended to everyone else. Not everyone wants to play optimally, sure, but are we at least allowed to talk about it? Do I have your permission, big bro?