I had watched that documentary a few days ago, it's awesome. No idea about the newly made ones, perhaps Birgir or Kevin looking at the circuit could say how it's working. If they want to keep that unique tone they shouldn't be using NFB.
I haven't tried those many guitars in my life, but when you play one that feels good and seems easier to play than others, you immediately know it. That's a good keeper, which doesn't mean you can't try others. They aren't wives. I've always played concert and acoustic guitars, I've owned an electric one for the first time since November last year. It's the one I feel more comfortable playing, but I still remember how good and easy was the Martin 000-28 EC that I once played and never dared to buy. I don't think I'd be in the market for another guitar until I really feel I'd need another one for my knowledge and technique really benefiting from it. I feel far from that.