> They don't even offer additional functionality over the open tools. "Autofill public keys in your browser for Git and other cloud platforms" - really? cat and copy - paste is now too hard?
In the case of browsers cat and copy/paste is often more risky than having code such as a password manager fill the fields. Password managers are less likely to be fooled by sites using tricks with their names to pose as other sites.
If you are sufficiently careful to be sure you will not be tricked by phishing attempts then cat and copy/paste should be fine.
