[Shujin]

Comparing buster Canon, a status that nulls the defense of a tank entirely, for all attacks with your whole team for a duration of time, with a low level freeze you can struggle out of, have an immunity to after an always works for only one attack and saying those are on the same level is more than just a small stretch in my opinion.

I disagree with frozen being a problem, as it's one of the few soft counters to cobra kite builds. And even that not at all effective. If your only Form of defense ist just evade/cobra, you get a bit of pain every other round... A level 200 frozen From archer, is a bit more oprssive and it doesn't need much set up at all. And that one is also fine.
I honestly think this is more of a knee-jerk..

Also the same argument as you used for buster Canon and frozen being used together... Usually if you have to freeze someone to hit them, their defense was unexistent to begin with. Unless you do one of these try hard no hit/maximum Swa build I guess, though then you also don't need them frozen and just auto attack spam.