There's heaps of young guys benching 225 ish for low half reps, real shonky reps too, no negative control, just waiting for something to snap. There's this one guy thats bigger than the average gym guy. Always does half reps and leaves the weights everywhere, he'll do dumbell presses and leave 4 pairs of em on the floor and just leave. He's always posing the the mirror, doing double bi's and side chests. Everyone hates him.
Squats are worse. They should play pro videos in the gym, set an example of how to lift.