[xyzzyz]

Nothing wrong with that, sure, but making comments related to ongoing antitrust litigation against company employing you, while not being any official spokesperson and not having your comments vetted by legal and PR, can be really, really detrimental to one's career if Google decides that it doesn't like your comments. Google is very explicit in its internal trainings to never make any public comments like that unless you're officially empowered to do so. You can say or write anything you want on HN... on the last day at your job.

[kungito]

I worked at Microsoft in Europe and we never had such training. Is this only in the US?

[StreamBright]

Yes, in the EU employees are more protected and it is much more limited what an employer are legally allowed to do. In fact they have to prove that your intention was malicious.

[Hamuko]

There's probably better protection against random terminations on average in Europe than in America.

[pmoriarty]

Would whistleblower protections apply in this case?

[Sebguer]

No, why would they? He's not whistleblowing. The commenter even admits that he has no context on the link in question and just suspects it's what's being implicated.