Its the AoE knock that is the issue. My blizzard objectively does more damage than your explosive blast and energy torrent, full stop.
If you knock things out of my blizzard, you are not helping in any way. But for the most part, I generally ignore it because I’m usually a mob or two ahead anyway. And when I’m not, I’ve gotten fast enough to get my things off(Heat loss and sleet/blizzard) before the knock fest begins, so im good.
Nova is never an issue because nova does I think meaty damage for a nuke so most things are dead and bosses so close to death that the knockbacker can and will cause I wont, clean up their mess.