> I dont want an online backup. I want my credentials to only be on my computers. So now I gotta learn about which apps are ok, don't have cloud synching

If an "online" password manager uses end-to-end encryption, then the credentials really are only on your computers. The only thing "in the cloud" is encrypted blobs of data being moved around for the purpose of device sync and backup.

This insistence on using local non-syncing password managers is a masochistic exercise in making life difficult for yourself with no security benefit.

That came across more snarky than I intended!

Let me rephrase: for the majority of users, the usability and resilience benefits of synced credentials are enormous, and the security costs are marginal at best. But this rests on a number of assumptions. YMMV.