I replied to comments that seemed ill-informed or hadn't bother to read the design doc. I have been writing Python since January 2000 or so, so I guess I maybe have 2 years on you there.
I haven't encountered any difficulties with the GIL either, but that doesn't mean it's not a problem.
FWIW, I think it's a good thing to encourage people to read the design doc. Ignorant knee-jerk responses help no one and waste a lot of time, and we can have a better discussion if participants are better informed. I don't think you were doing the wrong thing, I felt you were doing the right thing poorly. ("FUD" is pretty strong language IMO in this context.)
I really do hope Gross is successful. It does seem like he's "got an angle", so to speak, on the problem. At the very least, he's coming into it well-informed with his eyes open. He wants to try excising the GIL (and FB is apparently footing the bill to boot) so it's stupid to object, eh? Who cares if he wastes his time? He's not hurting anything. And maybe the horse will learn to sing. :)
The FUD comments came when I was on my phone and in https://xkcd.com/386/ mode. I was just disappointed seeing so many comments that were, well, FUD. FUD may be terse, but I don't think it's strong language.
There's a lot of misunderstanding around the GIL in general.
I haven't encountered any difficulties with the GIL either, but that doesn't mean it's not a problem.