It's only recently that graphics / audio / video / networking in javascript is almost as good as flash/java was 15 years ago!
Sometimes it's easy to think we're on the cutting edge. But we're really not.
Yeah people did some amazing work on those proprietary platform when they were the only game in town, but it really doesn't hold a candle to what we have today in terms of a fully open and native web tech stack. If you want to be reductionist why not just say we haven't been on the bleeding edge since Lisp was invented and declare everything else derivative tripe.
The "open and native web tech stack" is something that evolved messily over a long period of time in a piecemeal fashion with little overall design vision. It's hardly something to be proud of.
Maybe design snobbery isn't as important as designers think it is.
And yes, the web is definitely something to be proud of.