I mean, cockiness in your 20's is kinda the point of being in your 20's. As long as one learns from those experiences and grows out of it, I don't see the issue.

People aren’t allowed to grow.
Most people grow out of that ish with life experience.
Granted, being an extreme a$$hole/bytch shows major character flaws that were probably nurtured by one’s environment, which says more about a young person’s parents/family…
But yea. People can be little shyts in their teens and early 20s. Female AND male. Grown folks know this because *gasp* we were once 21YOs who thought we had it all figured out, too LOL
Shyt is different when you really
are popping as a young person, and most people can’t relate so they judge and put young people in a box forever.