Mechanics gibbers are overpowered.

[Vitatroll]

It's only bad if it happens every round. Just like porting the x and y drone to the station, or making a zombie hoard with immortality, or canbombing, or teletraps, or [gimmick]ing, etc., etc. Anything can be annoying if ran into the ground so people don't tend to do that. They don't want their powermoves taken away and they don't want to be 'that person'.

As for grinders themselves I like 'em. Only time I don't is when they remove all deconstructors.