I like this couple. I have no problem at all with anyone feeling like they want to confront JW's in public. You are not controlled by the Watchtower any longer, and do not have to play nice with this cult that has destroyed many people & families with their dysfunctional teachings.
I would not call them brother or talk about loving them. I would not use the bible or scripture. I would just talk about the bat-shit crazy teachings, the changed beliefs, the hypocrisy, the scandals, and the fact that it is a cult.