In response to the title of the piece; it isn't cool, and never has been. The need to slag off something that's not what you happen to like is really just a prejudice. It might be justified; it might not; but I'm pretty sure that a prejudice isn't a cool thing. It's just a thing. I have my own; I know and accept those.
As for those of Paul... well, he's got his own convictions and I believe he's wrong or misguided, but I can't fault him for saying what he thinks or standing by those beliefs.
As I recall, CERT (or was it one of the other bodies ?) only recently issued an advisory, recommending that users stop using IE. Are they too being intollerant ?
You reference the bleb site which degrades very gracefully, but you might also want to look at ebuyer, which degrades reasonably well too, although for it considers 'CSS' to be a 'basic web standard' which I personally disagree with, but that's progress I guess.
I do believe that Drobe itself used to tell users to stop using Browse/Phoenix because of a single flaw that it was seeing. Viewing in Browse now, I don't see that warning and although my memory is shakey, I'm confident it's not failed me here.
On a slightly topic, I was surprised to be chastised for voicing an opinion that using the most suitable system for the purpose was more practical than sticking purely to RISC OS because that's what we do. Ah well.