My ender 3 v2 extruder is crushing the filament and snaps thus the printer fails to print. I have adjusted the extruder tension, nothing has changed. I also upgraded to a 0.6 hardend steel nozzle and I checked if it was the nozzles temperature, that made no difference.
As others have said, it’s not a great extruder, but I’ve never heard of any “crushing” the filament. Perhaps you could post some photos of the filament and the extruder? Despite its flaws, it should still be usable (unless the plastic tension arm has started to break).