Rhialto wrote on Oct 11, 2017, 22:24:
Anyone on Steam did the Connect thing? It looks permanent so no way to unlink, unlike on humblebundle which I link to get a game then unlink right after.
I have used it, and I believe you are correct, you cannot unlink the accounts, at least easily, as far as I can tell.
Aside from the obvious data sharing risk, just use different passwords, use 2 phase authentication if you're feeling nervous. Both GoG and Steam offer it.
The Steam Connect on Gog seems to only work if you make your Steam account public, so you can also make it public, link games, then go private again. It might help.