Why are socialists so insufferable?

I’m pretty sure it’s a contagion that just wipes out critical thinking. I’ve seen people who were at least somewhat intelligent turn into walking soundbites after binging The Guardian – now they just parrot talking points without a shred of original thought. Try challenging them, and they’ll derail the conversation into some nonsense about racism or misogyny and how you’re “being fed conspiracy theories”. It’s like their brain just hit the factory reset button to NPC mode.