Lots of delusional people here. Gretzky was amazing playmaker but he would struggle scoring goals in today's NHL. Just review his goals on YouTube, most likely 70% wouldn't be goals currently. His shot is simply not good enough. He would still be scoring some goals because of his skating but there is no way he would have been scoring 50 goals in this era.
You may not be aware of this (since, judging by your posts, I guess you are under 18), but players in Gretzky's peak years did not have the super high-tech, light, whippy sticks of today, which enables bottom-pairing defencemen to whip missiles to the top corner of the net. They had hard, heavy, pieces of wood (Gretzky used the heaviest stick in the League, by preference).
So, looking at Gretzky's shot on YouTube and then comparing it to today's players is probably the single dumbest argument I've ever heard for why Gretzky couldn't be super today... and I've heard a lot.
By the way, some of us (and I'm not a "Boomer", by the way -- rather, my parents are) watched Gretzky live and today watch McDavid / Ovechkin, etc., live. So, we don't need YouTube highlights.