I don't see any of this "prodding" from Fred's end to be an issue whatsoever. Its a legitimate question, and IMO, should get an answer.
Wouldn't ANY of you want to be in full knowledge of a (potential) issue that could cause bodily damage internally, BEFORE it could possibly become an issue? I believe you would.
Last year I met Fred, across the street from where he works(the Dolby(Kodak) Theatre. He shoots back(stage)/in-house stuff for Jimmy Kimmel, IIRC) and he was a very nice, cordial guy. He mentioned he used to shoot in Europe, but also here in the USA. Fashion stuff IIRC.
He's a straightforward, but openly honest guy; not afraid to express his opinions if something might need attending too.
I was there to check out the GX680 system, since I'm looking at it as an alternative to my HB V system for film use(and possibly digital as well, down the road).
He might seem to harp on the GX680/film & dslr front, but he uses tools that work for him.
To me, he just wants answers, and isn't afraid to ask questions
. Not a big issue, but I can see some of your points relating to MFDB's and some feeling them being "downtrodden".
Honestly, I think a lot of MFDB users only use them because of "big dick" syndrome. Pretty much everyone wants a big one, but still can't understand how to use what they already have to its full potential
I've assisted for a couple people(both in/out of towners here in LA) who have been "awed" by the quality capable with MFDB's, but many relish the speed/ease of DSLR's. Sorry, if you want 80mp files, you'll need to slow down a bit on the fps rating vs your 5DIII. They just buy it to have/use something that many other photographers simply cannot afford to own, and can toot their own horn, "I use...." "Oooh.... that must be expen$ive..." . Or to show off for clients.
But when they can't keep delivering the same "feel" with their shots, they and their clients suffer.
Back to the wi-fi topic:
If someone(in this case, Fred) is asking LEGITIMATE questions relating to design and a (potential) health-hazard, I'd want to know answers to them.
I highly doubt P1 would skirt FCC qualifications, and would only include a wi-fi transmitter/receiver module in a back if it was cleared for worldwide use according to int'l laws in place.