They also make sense if you're using bcrypt since it has a 72-byte max input length. More modern password hashing fuctiions don't have such a short limit, so yo

They also make sense if you're using bcrypt since it has a 72-byte max input length. More modern password hashing fuctiions don't have such a short limit, so you can set a much bigger max length to prevent excessive network traffic & processing (eg 1kB). Since functions like Argon2 have very large max limits (2^32-1 bytes for Argon2) it can make sense to set a shorter limit.