yeah, a lot of guys develop shoulder problems from them, my feeling is that if you pull your shoulder blades back at the beginning of a set and keep them pinned back you should be able to keep your shoulders healthy, it all has to do with your elbow position in relation to the floor, the further your elbows drop the more risk you put your shoulders at, thats why you should NEVER take a weight off the rack yourself on benches, when you do you automatically put your shoulders in a bad mechanical position for pressing, ALWAYS get a hand off and keep your scapula retracted during the set.
i've seen some amazing pressers over the yrs in person put up staggering weights,,some had good chests some had frdelt/triceps that took the load,,,it is a very mechanical and natural movement for some,,to me it was cumbersome and i never got the feel from them ,i always wanted to be one of those fluid pressers where the weight cruises and that clanging weights from 3 to 4 plates ,,,just not in the cards ,,i have the chest and look but as my wife would say 'all show and no go'