Avoidant of unwanted social contact, triggering issues, and paranoia...
That's an avoidant personality disorder, most likely medicated if he showed signs of tiredness or slow speech. Paranoid schizophrenia would be less realistic, i.e. government is conspiring against him. PS's also have a tendency not to block people because they'd rather see what they're saying so they "know the truth."
The best part about avoidants is when they are put in a situation where they cannot block/avoid/run away and they're forced to deal with it. My favorite is just calling them out and staring them down, their worst nightmare.
Now... if he's actually afraid of eggnog ninjas, ignore my previous statement and someone for god sakes please put some cardboard cutouts outside this mans house because that would be a true Christmas miracle.