There's no need to insult other posters, but if it helps you prove your point then fine..
Anyway, your average NHLer IS more skilled today.
Obviously, players today aren't born with more innate talent, but they do have the advantage of modern training techniques (power skating, "the science of sports", etc.). This allows a player to develop their skill set to the fullest - so the end product is much better than it was 30, 40, 50 years ago.
Of course the best players have skills you can't teach (and they can play in any era), but that doesn't disprove the notion that hockey players today, as a whole, are the most talented they've ever been.
In addition, the game DOES evolve. Players try new things, new coaching strategies are implemented, etc. and these things are built upon generation after generation. The games of the 1950's were extremely primitive tactically and also in terms of what the players were doing on the ice. Even the 'highlight reel' goals of back then are laughable compared to todays.
This is the same reason why the NHL 50 years from now will be much more talented than it is today.