Signal/noise
I don't think the Rockets lost to the Lakers/Spurs/Warriors the last 5 years because of any issues related to Harden's character or chemistry. I think they lost to those teams because they were better at basketball.
Taking opportunity cost out of it (i.e the Heat being able to trade for other top players later), I think trading Robinson/Herro for Harden would give them more equity to win over the next 2-3 years.
Funny because everything people are saying about Harden is everything they said about Butler before he went to Miami. I'm sure I could find threads and link them but don't think there is much debate he had that stigma as well. When AD got dealt to the Lakers he was a "bad stats on a good team guy" and they gave up too much.
People just kinda run wild w/ this stuff rather than focus on substance imo, just kinda the culture around sports media and media in general.
I understand your points. And you make good ones. I just think this Harden character is a different animal.
Just for interest's sake, I'd like to see him traded to a contending team. Just to see what happens..