I kinda behave that way too sometimes but mostly because I disagree with a lot of what’s said but rather not kick the argument nest. Easier to avoid hurt feelings by not replying. It also gets tiring if you need to argue all the time but you may still want to see what those people say. Often ill follow people because they talk about one topic but then they go off talking about 3 other topics I don’t like so it’s best to just not engage and wait for them to talk about the things I do care about