Wtf is an onion knight

No one played through FF3 and leveled these up unless someone told them

FF3 bad because it's forced jobs, like you can't beat Garuda without dragoons

Gonna play FF16, any recommendations for self-restricted rules to make the game harder?

I heard there's "accessibility" items like "auto dodge" that are basically like an easy mode that you're not supposed to use, and some people calling the game too easy are using them, is that true?