To be fair, even when I do this, it's usually because I'm chatting with a friend who intends to log in, but usually ends up not wanting to (or technical troubles arise), so I log out and we do something else (usually explore in Genshin Impact).
But I imagine a lot of people use their estates to just... do that, these days, yeah. I know I have friends who only log in to keep their houses, but even that's starting to lose it's hold on them.