Yep, some so-called-friends are toxic. They're not interested in your W's welfare as much as validating their own sh!tty choices in life. For every person who has voiced something about our situation, I question what their motivation is, where they are coming from, what feeling they hope to get out of the conversation.
Boy - this seems to be a common theme here. I know from my own sitch that my WW was actively encouraged by "friends" who were able to do it from the safety of their own secure marriages. It's the whole "you could do so much better", "they don't deserve you" conversation which people have tried to have with me too. On the other hand to your point ForGump, some people will light a fire just to watch it burn.
Separating our spouses (and ourselves) from this noise is probably impossible especially for those of us here which is it's own brand of reinforcing noise. My WW told me when she walked out that she was needing to do that to have space and quiet to make up her own mind.
On BD H52, W50 T27, M26 S21, D23 BD-9-Mar-16 D-15-Jan-18 Final-19-Apr-18 I am a storyteller. The story may do you no good. But a story is never for the listener. It is always for the one who tells