forget about stack sizes? you mad? haha. however, i do agree with your other points you made. but no way should he forget about stack sizes. you think he should light 3 bet the big stack when a guys sitting in the bb with 5 bb's? or open shove on the button in to two 30 bb stacks with A rag? this play would be totally fine if they had 15 and less bb's. also if a guy utg has 1 bb it would be suicide to go bust on the current hand if he is almost certainly out next. stack sizes should be taken in to consideration along side 3/4 betting, weak players, good spots to steal, how tight/ loose someone is playing. also hud is over rated imo, i used it for a bit but don't really see the need for it tbh. as long as you are able to concentrate near the end of a tourny and not play tons of screens at that point i think it's fine as you can pick up on most opponents tendencies. of course it will work for some though
going to have to completely disagree with you here, if you have Ace rag why would you not shove into a 30BB stack, but you would a 15BB stack
unless of course your stack is that small that you need a double up, in which case Ace rag might be appropriate to steal with
but to say dont do this against a 30BB stack but do it against a 15BB is crazy, because whilst they have 30BB they have a playable stack and have no need to get involved with all in situations as much, once they get to 15BB they are prety much looking for the double up and will call you down lighter.
This is the point he was also trying to make about giving the opponent fold equity,
as for the point of dont do it because of 1 single opponent who possibly could get knocked out, well thats bad advice too, were not meant to be thinking about "laddering up" were playing for the win so what difference would it make if you shove now, or shove when the next opponent is out...... well if you wait then you have a lower stack and reduce opponents fold equity even more so later