How do people use KeePassXC? Do people not need access to their passwords when they're on their phones? And how do people choose between all the KeePass derivatives?
Strongbox for iPhone/iPad: https://strongboxsafe.com/
There are plenty Android Keepass apps too, i don't have any experience with these though.
>And how do people choose
FWIW, KeePassXC is the best (most widely adopted) one for Desktop.