This is one of my least favorite type of threads: "_______ is actually not equal to the hype." The problem with these arguments is that they always use the straw man of "the hype" to easily knock down, with no reference to actual examples of said "hype" that were written or said by respected journalists or reporters.
Yes, there is a lot of hype surrounding LeBron returning to the Cavs. But that hype is due to it being a big news story, not because the Cavs are necessarily certain title contenders. In fact, I haven't heard anybody in the media claim the Cavs are the favorites to win a title. LeBron even wrote in his letter that he thinks it will take time!
You might say something like, "Well Las Vegas has them as favorites to win the title." Well that doesn't really mean anything because Vegas uses their odds to generate bets and not as a true indication of what they think will happen. It's very possible they opened the Cavs as favorites just to make some headlines and create more action. A lot of sports fans don't actually bet on sports regularly, and this is the kind of big news story that pulls in casual betters or overexcited Clevelanders. And when you make one bet, chances are better you will make another one.
2 points in your original post are already easily refuted. The Celtics big 3 won a title their first year together. The Heat went to the Finals their first year together. Great players will find a way to play together. In terms of role players, it's not like the team right now is complete. Obviously they are going to be totally remaking their roster now. With LeBron on board, other players are already interested in coming, possibly for discounts.
1) If you read the whole original post, then you would I said I would buy the hype conditional on the three premises I suggested: chemistry, strong supporting cast, and a defensive system that makes Love and Irving passable defenders. So I'll only buy the hype when these three conditions are met.
2) I used an actual, empirical example of hype as my point of reference (Lebron's not 1, not 2, not 3 quote), so it's not a straw man argument.
3) Our Big 3 was in a totally different situation in their respective careers than Irving and Love or Wiggins. To suggest a similarity there is incredibly shortsighted and invalid. There is no symmetry between the first year of a Lebron, Irving, Love trio and the Garnett, Pierce, Allen trio. Hell, two of the Cavs' trio haven't even been to the playoffs! How in the world do you think they could possibly win the championship their first year?
4) I was directly referring to the Vegas odds, but by the tone of everyone else here they're also buying those odds. So when the prevailing opinion in my experience is the same as the betting odds, that's what I'm going to use to justify my opinion of what "the hype" really is.