In password security, the longer the better. With a password manager, using more than 24 characters is simple. Unless, of course, the secure password is not accepted due to its length. (In this case, through STOVE.)
Possibly indicating cleartext storage of a limited field (which is an absolute no-go), or suboptimal or lacking security practices.
24 is not fine if you’re like me and use passphrases sometimes
A 24 char passphrase while not as bulletproof as a machine generated string is still credibly strong even to offline cracking attacks when possible. In all the datasets of passwords acquired through that sort of cracking I don’t think I’ve ever seen it catch even a 4 word passphrase.