It sounds like you really got hung up on a double standard. Life is full of double standards. Life is not fair. It's not healthy to dwell on this. If you can't accept it than look for a new job. When you saw people in their early 20s were in positions of authority, that should have been a sign about the people that hired them.
Some people cannot play the office games and are best going into business for themselves. The one thing you won't do is change the office culture as a new hire. You are easily replaceable for them.
You might be great at your job, you might make that company a lot of money, but a lot of people in that setting are concerned with themselves and not the company.
My generation was raised with all these ideas about doing the right thing and being fair and honest. None of those principles apply in business.
Edit: I mean Diddy, I don't know if you watched Game of Thrones but you basically pulled a Ned Stark.....