Ideally, sure use a password generator - but I wouldn’t worry about the security of a password generator like the one I linked.
- There’s no linking of the password you generated to whichever account you are creating.
- There’s no guarantee from the web operator’s perspective that you are actually using the generated passwords for anything at all.
Again, use bitwarden’s generator - or equivalent - for passphrases, but in the absence of that correcthorsebatterystaple.com is good enough for a non-shared password.
Don’t worry, AI will help us (make the situation much, much worse by simultaneously causing outages and causing a massive increase of emissions.)