Yes, that seems like a really good reason to have a limited set of people who can create such popups. Which Google did.
If someone makes an alert that management wishes to overrule, that seems like a really good reason to be able to revert commits, which I believe Google's version control system is able to do.
If they made a really bad mistake and you want to make sure they don't do it again, that seems like a really good reason to have their manager call them into a meeting.
If they made a really, really bad mistake, then perhaps there's formal disciplinary action, like a negative performance review or a docked bonus.
None of this seems like a reason to fire someone. Definitely none of this seems like a reason to drag them into a conference room and interrogate them to disclose the names of other people they're organizing with. That's what you would do if you were threatened by the content of the notification instead of unhappy with an abuse of process.
We'll never know exactly how the disciplinary process went down. But from Spiers' Medium post, it sounds like they tried to have meetings multiple times and she doubled down. If she told Google what she's telling the public, that she did nothing wrong and it was illegal for Google to stop her, that seems like a plenty good reason to fire her.
If someone makes an alert that management wishes to overrule, that seems like a really good reason to be able to revert commits, which I believe Google's version control system is able to do.
If they made a really bad mistake and you want to make sure they don't do it again, that seems like a really good reason to have their manager call them into a meeting.
If they made a really, really bad mistake, then perhaps there's formal disciplinary action, like a negative performance review or a docked bonus.
None of this seems like a reason to fire someone. Definitely none of this seems like a reason to drag them into a conference room and interrogate them to disclose the names of other people they're organizing with. That's what you would do if you were threatened by the content of the notification instead of unhappy with an abuse of process.