Itâs because ice has a connotation of freezing. Freezing is kind of what ice has to do in order to be ice, so like, if youâre going to freeze enemies, you immobilize them. You have to trade off power for the abiity to have CC. Itâs logical.
Not saying ice canât be a powerful offensive type in RPGs. But thatâs often the kind of role it lends itself to.
Also do not forget that Cryo gets Ice Pike. One of the most spammable and reliable âSTOP!â CCâs in the entire game. Pyro might have flame piller but it canât do that. Flame pillar is Pyroâs only hard CC while Cryo has 3 ways to control enemies not counting ice wall.
Also, if you do badly want to do damage with ice moves, thereâs always Elementalist with its powerful hail.
But yeah, a cryo buff would not be out of the question, I just personally really enjoy cryoâs identity as it is and love combining it with classes who can make use of the CC it provides.