Because yes, your behavior is a sign of low self-worth and you do act like that because the only dopamine rush you get is from hating people on the internet, because your mommy never gave you the attention you wanted or taught you how to get dopamine in a healthy way. That happens when you grow up in an emotionally unavailable household, and you are neglected as a child in the sense that you were never taught emotional intelligence.
Or you wanted your daddy‘s attention, and you only thought you can get it by emulating his behavior and his beliefs, causing you to never branch out and do thinking for yourself. The majority of young conservatives are only so because it’s what their family believes, and that party doesn’t necessarily encourage questioning belief systems. Also caused by emotional neglect as a child