the main question here is, do you really need to change the settings once you have a baseline?

I'm another one using a private GitHub repo for this. But I don't need to pull, update, sync or whatsoever. I've been using the same config for years, and in the eventual case that I would change / add something, I can do that quickly in a few computers, no need to have any sort of sync.

For VSCode settings I just use the built-in service.