No.
It’s actually a pretty common opinion.
Tanks have fewer mechanics to deal with.
Any player who cares about performance reads up on encounters and mechanics prior to doing them anyway. That isn’t a tank thing.
Sure, if a tank doesn’t know what to do then they’ll wipe the group whereas a DPS usually just kills themselves, but irregular tank mechanics are few and far between.
For example lets look at a guide for the entire Theater of Pain dungeon:
https://www.icy-veins.com/wow/theater-of-pain-dungeon-guide
There’s only one tank specific piece of information and thats to stay in melee for 1 boss, which is what a Tank would be doing anyway.
Every other mechanic is group wide, and occurs on the DPS far more often than the tank. Some mechanics are just completely irrelevant for the Tank too.