What I read is this:
"Hey, look at what these rules inspired me to do! I really enjoyed that."
I can't see how anyone would see those as bad rules.
I think the disconnect is this, but I could be wrong...
I agree, AD&D and the Basic line had
good rules. They were not balanced like 4e was, but they were solid enough that many thousands were sold, played, and enjoyed.
I think what
some 4e players want is for Mike to basically say, in each and every L&L article, how older editions sucked and how 4e is the best. Not in so many words, mind you, but I think that's the gist. And when he doesn't say how great 4e is doing in his article, and doesn't say where the missteps were in pre-4e D&D, they read it as, "Mike loves older editions more than he loves 4e. Look at all the time he's spending on them!"
I think it's irrational, but then again, I've actually played 1e recently, and I have a ton of respect for both it and for the BECMI rules. (I'd also love to run the 0e retro-clone, although its name escapes me at the moment.) Do I think 4e's rule-set is a better chassis, mechanically-speaking? Yep. I think it is stronger mathematically, and I think it has a good handle on class balance. And I know it's made for some awesome fun at my home table. However, older editions - particularly way-older editions - have their own strengths, too.
At least, that's how I see it, and I could be completely wrong.
-O