20$/year is still cheap compared to other password managers, but yeah, the lack of transparency is worrying.

Keepass is free?

Thing is, a large percentage of internet-connected users might have two or more devices. The simplicity offered by a cloud (be it hosted or selfhosted) password manager is a huge benefit.

And unless you’re already running a syncthing-like service for something else, setting it up just for a password manager when other services provide it out of the box, is not worth the hassle usually.