Plus, Google's huge and has very few internal communication barriers --- nearly everything is open to everyone. So it's really easy to get into the habit of casually talking about internal products when talking shop.
Then you notice someone nearby who isn't a Googler, and you go oh shit and stop talking.
And that is almost definitionally a lack of social grace and tact. It's one flavor of what is meant by "low EQ".
It may be usual and common for Google employees to do that. That doesn't make it excusable, and it's a pretty big reason why I, too, tend to avoid gatherings where I know it's going to be a bunch of Google employees. They communicate that they don't want outsiders around? I can oblige.
So that's a lack of EQ... So much so that it's a lack of common decency. Yes, it's a big deal, yes it's exciting but when in mixed company you need to talk about other things if it's indeed secret stuff.
Plus, Google's huge and has very few internal communication barriers --- nearly everything is open to everyone. So it's really easy to get into the habit of casually talking about internal products when talking shop.
Then you notice someone nearby who isn't a Googler, and you go oh shit and stop talking.