No!
This one time I went to the VA in Tygervalley, and there was a dude using the only Squat rack, so as upset as I was I went over to warm up on the other side of the gym on the row machines. So 5 minutes later I went back and this guy was on the ground with paramedics rushing him out. He also hurt something on his back whilst doing squats. I checked the plates loaded, and he was doing 100kg squats. While quite heavy, I have done up to 110kg at my max with squats.
I am pretty certain, if you do an exercise with bad form, it will hurt you, especially when it is a day that you are not feeling great. Me? I am smaller than the guy that got hurt, and I have in the past done more than he did that day.
When you go heavy on Deadlift and Squats, form has to be near perfect. I would go as far, and say the same goes with Bench Press and Overhead Press.
I am a thin'ish guy bodyweight of 72kg and I haven't hurt myself like that before, so all I can believe is, good form helps. A spotter also helps if you do it with bad form, seeing as Chicken Boo exercise in a home gym, I am pretty sure he had no spotter, which makes near perfect form a 1000 times more important. This is also the reason, that if you see form is not what it should be, that you should back down on the weight, even if it is a weight you normally use to warm up with, it means something is wrong and you need to fix that before you go heavy again.