What you're expressing here is that many of the ideas from that period of xml-centricity were quite good and useful!

But xml itself was not a good language for this, because its legibility is terrible. It's just not a good format for human reading and editing. (But it also isn't a great format for machine interaction either...)

So yeah, I see it as a good thing that this seems to be able to do all that useful stuff you were doing with xml and xsd a decade (and more) ago. But it's (IMO) a much nicer way to do it.