How do monks hold aggro in groups

[Dundrige]

Hi I love playing paladin but my friend said they are terrible compared to monks.

He said the ceiling is way higher because monks tank better, do way more damage, and can FD.

He also said paladins are pathetic.

My one question to him is how do monks hold aggro in groups? Say you are in a group with a bunch of casters... how are you keeping them alive? You can't taunt... you can't root.... you can't cast spells... so how?