No, deady bear, it means that they are simply never given the fair shake they deserve and are shortchanged as just very good, tweener level AHLers, no matter how well they do. Some indeed are just that, but even the ones like Weal and so on get lumped in with the label. There are career AHLers of all shapes and sizes, be they Martel or McDonald sized. It's just very hard to get an opportunity when you're undersized, and you usually only have the one chance. Being undrafted is certainly a factor, but I think we are seeing more of these kids get drafted now.
Don't think it's that simple.
If Leier couldn't play on the 4th line he'd be back in the AHL, but his ability to forecheck above his weight class has bought him time, but he still has to show some offensive skills to stick.
One reason Cousins was traded was he was a bad fourth line fit and hadn't shown enough offensive skills to stick in the top 9. If he was a better fourth line player, it would have bought him more time to develop.
Weal got a cameo, didn't produce and went back to the AHL, as a guy who was top 9 or bust, he had to show he can produce offensively from day 1. I think that's the problem for smaller players, they don't have the luxury of playing 8 minutes a night on a checking line until they get acclimated to the NHL. If Hextall brings up Martel, it will be for instant offense, so the pressure will be on him to rack up points.
Raffl has the edge over Lehtera and Weise because he can be productive in a fourth line role whereas they have to score or sit.
On the other hand McDonald is a career AHL player because he can't even win a 4th line role.