Not defending McQueen as I don’t want to select him either at 7 but back injuries vary in seriousness and the combine and medicals will tell teams whether or not it’s something to worry about long term.
If it’s a muscle injury then is usually pretty minor they tend to come from big growth spurts anyways and usually just require more muscle and strength development you gotta remember a lot of these 6’4+ kids are only around 180-190lbs usually once they find their stable weight at like 210-220 a lot of those previous muscle problems tend to go away aswell as just the time it takes your body to adjust.
If it’s a bone injury that’s where it gets scary because a lot of those usually require surgery like Cayden lindstrom last year who had a slipped disc that was pressing on nerves in his back, those usually tend to re-appear again whether it’s 1 year down the road or 10 years you never really know.
As far as I have heard and read is that Mcqueens was just a muscle injury and wouldn’t require surgery just needed to give his body time to develop to his new size add some weight and muscle to support his large frame, if he was to fall past pick 12 though I’d be all in for Boston to acquire a pick to select him he does have top 5 talent in this draft and if he takes a little longer to develop because bruins choose to have him work a couple years with their strength/ speed coaches and their nutritionist so that he’s up to a healthy size come time for the NHL I’d be good with that.