QoL doesn't exclusively have to be improvements to make shit easier
That's literally the defining feature of QoL, be it visually easy to distinguish (a checkmark next to a collectable, or color text/symbol to denote damage type), or reduce the number of clicks (2~ click gathering crops/animal stuff on the island vs 80~). You have an objectively incorrect idea of what QoL means. And you KNOW this, because your example of your music resetting is LITERALLY you not having to click multiple times every time you want to change the music.

You seem to have a personal problem
Personal? No. Insufferable, obstinate people that don't understand what they're talking about and entire argument, whatever it is, boils down to, "But why?" is a lot of people's problem

Of course we can always strive to do better
You don't even understand the terms you're using, why should people listen to you when you determine something is "better"?

And it's the same arguments because literally it doesn't affect you.
Wrong, it does. Like people said, you can cycle through different stance/sitting poses. What if people don't want to use those poses? What if people don't want to see females squatting or leg's akimbo, or the female equivalent on males?

You do realize the game is rated T, right? While they can't fully control online interactions, they can control what they put out there. I don't think a girl squatting with her knees/legs spread out would fall under the T rating, ESPECIALLY the Lalafell.

If SE added ungendered sits in like, say a patch, you wouldn't give a shit.
Again, I don't know where you're getting this narrative from.