I switched to Neovim a year ago, and while I did spend a significant amount of time on configuring it, I haven't touched my config for months now - and I'm perfectly happy with it. There's things I can improve, but it does what I want.

I’m in the same boat. I spent a lot of nights for a couple weeks getting everything tuned just right, in the beginning. But now, several years later, it really doesn’t take much. I spend maybe 2-3 hours once every few months, and that’s usually just adding a bunch of features that sound nice to make my life better. I’ve easily gone 6+ months without touching neovim config, if not longer, because it’s unnecessary. It only matters if you want to further improve your editor