> And no, I haven't publicly spoken about American consumer rights, but I have been interviewed in the "newspaper of record" as a representative of an organization that works to end a genocide. If that counts!

That does count, yes. It also doesn't change the fact that publicly posting such a strong negative view of Rossmann context-free amounts to an ad-hominem, unless you link that negative opinion to a good reason on why his take on Google's harmful actions shouldn't be a topic of discussion. Otherwise it just comes across as an attempt to suppress his views or get people to discount his views.

A tactic you're likely familiar with, from being a target of it. Which makes it all the more surprising that you would wield it yourself, against a consumer advocate no less.