Very flawed logic. Just because you're too young to remember or you're too young to have read a certain comic means it's contents have no merit? I can't disagree more.
Age has nothing to do with this, there WAS no crisis for Marvel. The powers he had in the 70's weren't washed away, he still has them. Whether he uses them 24/7 is a different story.
In statistical terms, it is an outlier, something that is radically beyond the character's established capabilities ."
Exactly. If you HAVE read a single Thor issue, you'd have no problem saying making a shield is not, by any means, "radically beyond" his power.
Again, the abilities he's shown in the past ARE his established powerset. No, they don't get nulled because you've never heard of them or because you have a mentality that seems to say "If it didn't happen to my generation, it doesn't mean anything.?. And, sadly enough, that's a major problem with people in their 20's and younger today. Self absorbed.