> She was using a security tool to spread her message. Does that seem appropriate to you?

Yes, of course.

Apparently this "security tool" exists to notify Googlers of policy, and the notification just linked to a Google policy notice with a warning not to violate it. This is apparently the actual notification that was displayed:

https://miro.medium.com/max/2000/0*1BTVYLTvuHiJVvp_.jpg

> Do not violate go/nlrbnotice. Googlers have the right to participate in protected concerted activities.