The draft class a year or two down the road is pretty much always the most talented draft class ever according to people whose livelihood is premised on people being interested in draft analysis, isn't it?
You didn't hear talk like that last year or the year before. Even in the Wiggins/Parker draft most of the talk this time of year was on those two without much mention of anyone else (Embiid didn't really start gaining traction to after the new year). There hasn't been a draft considered this good both in top end talent and overall depth in a very long time. Now that doesn't mean those guys are right and this draft will end up that way.
I mean look at 2009. That was basically thought of as the Blake Griffin draft and guys like Harden, Curry, and DeRozan were after thoughts. Teague and Holiday have also made the all star game, and then you have plenty of strong starter types in Lawson, Henderson, Jennings, Rubio, Collison, Evans.