My feelings initially was frustration but after some time I lean more towards the general comments here, where its better to remove something that miss-represented the "action" of the request.

I have never noticed any kind of acknowledgement from any website I've visited in years with Firefox and this option on.

I want to do something to help signal "No thank you, I don't want this" messaging so the "harms user agency" feels relevant but if its not respected on the other end whats the point.