This is true.
You talk about how neat one/two click solutions are. No wait, setting up all the custom sync is no problem at all?
I’m confused what you wanted to achieve. Whatever.
Oh OK, I was talking about cloud sync integrations in games and tools like Steam/GOG Galaxy/ScummVM vs. generic file sync in general.
You were/are using ScummVM with a generic method already, not the built-in one.
I don’t see a real advantage here: To use this feature you have to know it exists and set a path or get the default setting.
There is no real difference in just finding the default (but non-changable) path for savegames for any other game and sync this one.
(This should be moved into a separate thread, it would be really nice to have some process so regular users can do this somehow…)