Do shops still sabotage cars for profit?

One of the guys at work had a set of new tires on his Lexus LX 470. It took 2 hours on the lift for in-stock tires.
3 days later the left rear went soft so he took it back. The tech (?) that put them on suddenly got sick and went home so another guy started to take it off. As soon as he put the wrench on 1 lug nut, the nut and 1/2 the stud fell off before he even hit it with air. And so did the next one. And when he put the key on the locking lug and tried to get it to lock in, he could not do it.

Appears that that guy that put the tires on overtightened 2 lugs and broke them as well as stripped the key off. He then Super Glued the broken studs and lug nuts back on and only finger tightened the locking lug.

Needless to say he no longer is employed there and the repairs and parts will be taken out of his paycheck.