Am I the only mad that Trixie and IronWill are credited as Villains

Neither one of them was evil on purpose.

For Trixie, sure she was annoying for her unnecessary use of third person. But when you really think about it, she was just trying to be a good performer, and the mai six are the ones that challenged her.

And as for Iron Will.
He had solid advice, but Fluttershy misunderstood what he was saying and took it too far.
And even at the end, he only got mad because Fluttershy said she wasn't gonna pay, and didn't give a reason why. But when she said she wasn't happy, he stood to his earlier promise that "if your unhappy, you don't have to pay on cent" and left empty handed.