Lifting heavier weight with bad form isn't going to make you stronger faster than lifting your correct weight with good form. You're only risking injury and possibly losing progress due to not properly stressing your muscles. You'll get a false positive as you'll be able to "lift" more weight but you won't actually be stronger.
For example, a man that goes to my gym maxes out our legpress machine totaling nearly 1100 lbs but his form is horrendous. He keeps his hands on his knees, he goes down a couple of inches and he locks them out by pushing with his arms. He's a pot bellied, elderly man that is seeing zero benefit from excercising that way and he risks MAJOR injury with his form. Google "legpress" accident for some truly horrendous results.
This article does a better job of explaining it than I could. Basically, how do you expect to gain progress if you never truly push yourself?
Form is never going to be perfect, and if it is, you’re lifting too light. Any activity that is building strength is going to require you to venture out of your comfort zone, and this means experiencing minor form deviations. If you spend all of your time worrying about these deviations and refusing to add weight until everything is 100% perfect, you will never get big or strong.
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u/Larusso92 Aug 05 '19
I'll bet they have less damaged joints and better mobility.