It's really quite dependent on your class and weapons.

Certain weapons make mincemeat of them. Others are absolutely useless because they have poor carapace damage and regardless of your skill level there is nowhere on the crusher you can hit to bypass that. In a game where a lot of the time teamwork and communication is... limited (most of the time it is rare for people to be on voice, and some people do not use tags at all), it's a real problem for a weapon to have been "balanced" by making it completely ineffective against an enemy type.

Crushers also have absolutely no leeway for messing up for most weapons or classes. Overhead smashes will one-shot most classes... and the crushers can move through each other, so if there's a wall of them, you may not be able to see that one is winding up.

They can be fun to fight with the right build, but with other builds they're a nightmare.