I agree. I can fully understand why his partner is doing this and I can also understand why some people will "just sign" but there is no reason to be critical of someone who isn't willing to just follow the pack.

In the physical world you are also sometimes confronted by people who stand outside a supermarket with a petition and you're supposed to be able to make a fully informed decision as to whether you should sign literally on the spot. If that's such a good system (it's not obviously) we should extend it to other things. But it's not and it's not even as if the person requesting the action that you have personal knowledge of their reputation or whether they are presenting the info fairly and completely showing both sides of the argument.

As I tried to make clear in my comment, I was taking issue with his/her method of delivery, not what he/she was objecting to. His/her point is a perfectly valid one, but that's orthogonal to whether he/she chooses to be nasty.