Anyone that moves up a level and struggles just isn't very good. Players are busts all the time. High OHL draft picks struggle to get their footing as young junior players and fizzle out, talented amateurs get to AHL and never do anything. It doesn't mean they screwed up moving a level, just means they went to the next challenge and weren't good enough.
Yeah this will interestingly likely also raise the bar for the NCAA while simultaneously lowering the bar for the CHL leagues. Though a lot more kids that might not have gotten a shot to play in the CHL will be getting that shot now.