Since it's Tesla, it garners headlines, and that helps with the lawsuits.
Lawsuits at other blue collar workplaces are boring, so they don't make headlines, don't threaten the companies involved, and go nowhere.
It seems Tesla is being targeted for monetary reasons here. Yes the underlying (if true) behavior is bad too. But the number of lawsuits should not be taken to conclude that Tesla has an especially outsized internal problem. Rather, it has an outsized spotlight.
None of this is to defend rude behavior in any workplace. But I doubt Tesla is particularly special except for the headlines aspect, which increases the potential viability and thus the number of lawsuits.
Of course that means it would behoove them to do more to address any behavior issues. I have no reason to think they are interested in perpetuating such behavior.