I’m not afraid to talk about political or social issues that I’m familiar with because I care about, but there are some topics I avoid. For example, I won’t shy away from discussing women’s reproductive choices or school shootings but god knows I won’t touch international issues with a million foot pole. I can’t speak for everyone, but for me it’s because there are issues I’m not familiar with. I can defend what I say about women’s health and school shootings because I actively read up on those topics. I, um, don’t know what the deal is in, say, the Middle East and Russia/Ukraine.
The problem with discussing politics is that you can’t just say what you feel. You almost have to be an “expert” in whatever the topic is.