She has the legal right to do union organizing at work, but she doesn't have the right to subvert the company's tools to do it. The idea that misbehavior becomes okay once you say "well I was organizing a union" seems incredibly toxic to me, and fundamentally incompatible with the kinds of freedoms software developers generally enjoy. If Spiers gets her way, and Google is legally barred from expecting line staff to use their powers responsibly, that just means Google will start requiring manager approval for everything potentially disruptive.