Does sej's ult feel underwhelming?

I know they cant really stuff her kit with too much but that ult just feels so meh. In terms of engage and in damage. The surrounding detonation feels like an eternity for it to go off. And even if you went ap sej I doubt it would do much. The only thing it's necessarily good for is the frozen champion it hits and if it doesn't hit in the right spot it doesn't freeze anybody which is just really sad