I tried to follow the Nash guidelines for endgame play. Villain shoved with around 5 big blinds. I had 96s, normally I would have folded but Nash said to call, so I did. He had Qx and it felt awful. What is the reasoning behind calling with 96s? I feel like I'm going to be behind almost always. I could see shoving with 96s at 5 big blinds but I didn't like calling with it.

Also I mute all chats. Is that rude?