I dunno, that might be taking it a little far... but I would agree that electro-acoustic improvisation has gone in a very different direction than the skittering contact-mike-everything-we-can-find improv of the mid-70s. What Parker did on those ECMs seemed in a netherworld between the primitive and the advanced, erring a bit to the right of centre. Circadian Rhythm and the duos with Lytton are amazing records, but there's really no need for him to continue those investigations. I'd much rather hear him play post-Coltrane freebop like I did in Minneapolis last year than something that most of the music world has gone beyond. I hate to say something is dated, but great as it is, I can't imagine all that February Papers racket being made today - or at least not with the sense of purpose that it had at the time.
Still, the Schlippenbach-Parker-Lovens trio, which I had the pleasure of seeing some years back in Berlin, was one of the greatest concerts I have seen in my life. There is still room for *that* music today, not "investigating" but plunging headlong into action.