An old football coach of mine use to yell all the time ,"If you want to bark with the big dog's you can't keep pissing with the puppy's". So if a tiny tyke like SquidFather is only use to those plastic weights and hollow DB/BB's, and not have that much experience with heavy training, he would not to exposed to real lifting. Can't really blame the poor guy. I forgive him for his lack of judgement and knowledge. Not his fault, really. Being critical of everyone is so much easier than actually hitting a gym to find out what it's all about.
Oh, by the way, partial 900lb lockouts are not that rare. As are those 300lb+ dips or 300lbs+ Skull crushers. Quite a few men do these in regular workouts. Hope this helps. I hope the SquidFather feels free to PM me, as he has in the past, about training programs . Will be happy to set some very productive workout plans for him. Good Luck.
PS: Also hope one of the mod's doesn't delete another one of my post...for what ever unseen reason.