Larry King: "Bill Nye where is Richard Lindzen wrong?"
Nye: "well, I'm not sure...but I find my colleagues...much more compelling than his, his view is a minority on a scale that's impressive - probably 100k:1 or so - 'scientists' vs. him"
So, if you're concluding that Nye didn't say Lindzen is wrong, that's a pretty significant technicality. And if you think it's not a personal attack when Nye says "scientists" vs. "him" - not acknowledging Lindzen as a scientist is is clearly an attempt to discredit him. Seems pretty obviously personal.
Nye characterized it as a personal attack - I happen to agree that it is but again, that's not important which is probably why you are so fixated on it. If you want to say it's not a personal attack, fine but that doesn't change the fact that Nye had nothing substantive to refute Lindzen when Lindzen demolished his argument and made it obvious Nye doesn't know what he's talking about. It was the perfect opportunity for Nye to prove he did know what he was talking about and he couldn't do it. So it wasn't a personal attack in your opinion (Bill Nye and I disagree but I don't care), but it also wasn't anything remotely substantive or scientific.