I remember when people said the exact same thing about Kane. I'd say that turned pretty okay...
There's a reason why smaller skilled players can survive in the NHL, and it has more to do with on-ice awareness than it does with enforcers. And if you're factoring how the game has changed with the extinction of guys like McSorley, you also have to factor in how the game has changed with suspensions, which is fazing out open-ice checkers like Scott Stevens and Nik Kronwall. Sure, there a few guys out there (M. Tkachuk, E. Kane) that throw these hits regularly, but they're much rarer in today's NHL.
That said, I still believe enforcers -- even by today's standards -- are important. But on-ice awareness is the most important when it comes to survival.