Like he's going to admit that after violating his nondisclosure agreement discussing Q&A at TGIF and disparaging GCE in public. Of all the things to discuss outside of work, the meeting that starts with a "everything you see, hear, and taste here is confidential as shit, man," slide...
Speaking from (direct personal) experience, someone that malicious needs to be identified quickly and removed, because that's without question not the only thing he's doing due to his disgruntled attitude. Nothing against him, just clearly Google has wronged him in some way and the responsibilities of his legal agreements are no longer important. That means it's time to move on before he harms the company.
Whenever I've spoken about my employment at Google -- even though I was fired inappropriately -- I'm careful not to divulge information that I promised to protect as it's important for my own integrity. And that's even when I have a pretty legitimate gripe with Google. Now that I'm with Apple, a company that ostensibly takes secrecy to an entirely different level than Google, I don't even discuss Apple in public. Ever. I know better.
I'd talk to Global Security about this if I were you since a case could be made that he tried to throw your LDAP under the bus.
Anyone can append a disclaimer to an anonymous comment claiming all sort of stuff.
Also one would expect Google employees to be smart his/her comment conveys the opposite: there is no inherent conflict between being mostly about mobile while providing developers with a backend on which to build their wares which are also becoming increasingly mobile.
There is a large amount of malice targeted at Google and much of it manifests in HN comments, as this threat would suggest.
I give it a little bit of stock because if someone came on HN and claimed "Larry and Sergey lit a pile of Bibles on fire and professed their love for Satan in front of the company," I'd be comfortable within the confines of my nondisclosure agreement saying that never happened even though TGIF is a confidential meeting. It'd have to be that ridiculous for me, but I'm sure the threshold for others is lower.
If "joebar" here completely made up the question and answer I bet one of the numerous lurking Googlers would have called him on it by now, even though it's a confidential meeting because (a) not everybody cares about nondisclosure to the same extent you and I do and (b) it's not like you're divulging corporate secrets, you're just saying that's a made up story. Pretty simple. "That story isn't true." Done. Legal gray area, but Google is pretty lax on social media until you fuck up.
I should clarify that it's probably a safe bet that the Q&A happened (and, honestly, sounds like Larry) but I disagree with the commenter's analysis.