Q: Keychain works on fewer and fewer websites.

At one time Keychain was great at auto-generating unique / hard passwords, and recognizing sites on return.

Overtime, I've notice that Keychain seems to work with fewer and fewer websites:

If before 90% of site's registration forms would be recognized by Keychain to generate a password, and typically would also be recognized by Keychain on return, now I find that as few as 15% of site's registration forms are recognized by Keychain and sites that I have used Keynote to store login information are suddenly no longer recognized by Keychain when I return.

This is incredibly frustrating (even infuriating).

Is this degrading inevitable?
Should I abandon using Keychain for password generation and login?

(I practically have at this point, as so few forms are even recognized anymore)