I'm new to MMORPGs and when I played Gladiator in phase 3, it never dawned on me that I was a tank until I started doing the dungeons. I never questioned why our abilities had increased enmity. Just thought it was a standard thing and nothing unusual about needing to protect npcs. It never clearly stated what my role was or explained how enmity worked and how to read it.

I blame the game itself for the abundance of bad tanks. The game is a terrible teacher. The only way to be a decent tank is look up stuff online.