the debate started last year with the puck preps list where they had belchetz not as a 1st round pick when he was the 1st overall lock. for whatever reason some online scouts and younger people (i generalize) still love the kyle dubas mentality of skill over everything. take the 5'6 guy who has more skill vs the 6'4 guy who is less skilled but competes hard and wins battles. the online community genearlly speaking loves small skill but doesn't value the bigger guys who may not be as skilled but are way more effective. its the same mentality that suggested that denis malgin for mason marchment was a good trade for the leafs. get the small skill, the big dumb guy isnt as skilled. any they are right, they are not as skilled, but sometimes the compete level is more important when the skill isn't overly competitive.
and just to qualify, its not even a size thing per say, the poster above brought up mbuyi hes not big or small, but he works and never quits, plays in dirty areas and will battle when needed, added to the skill and he's a perfect mix of both. now he never will have the pretty youtube plays like alex hage (remember he was like 4th overall on that list last year) but his work and engine are so big that it doesnt matter.
when your 5'10 and do not have that same engine. it gets harder and harder to be effective. so when you get a guy like belchetz who has the skill but is uber powerful and plays heavy, its an easy call to make.