These 'im so introverted lolz' things are generally all people failing socially in situations a 'real' introvert wouldn't be involved or interested in in the first place. And they make me want to headbutt the people involved.
Being an introvert doesn't mean you are shy, or socially awkward (you might be, but it doesn't make you one).
It means given the option between doing something by yourself and doing something with other people, you will pick the former somewhere between 99% and 100% of the time.
I am a super introvert. I actually have Schizoid Personality Disorder. Which basically means i have no interest in friends or relationships whatsoever. None.
When i was a kid i was dragged to parties a lot. I usually left the first chance i get so i could go and do something else more interesting. If this upset people - oh shit! i've upset people i don't want to be friends with!
I smile every time i get home and get to spend hours not talking to anyone. What shall i do tonight? Ooh! New book to read. Ooh! Videogames. Ooh! Practice my writing or maybe ill work out while watching cartoons.
I also have no social media whatsoever, a friends list on steam that totals 1 (my younger brother - literally the only human being I give a shit for).
And guess what? I've done fucking stand up. People tend to notice pretty quick I'm kinda odd ( i don't make any attempt to hide it) but no one would say that i'm not confident or capable of interacting socially. Hell, i work as a salesman. My job is literally to interact with people, all day, and sell them shit (weird job for an introverted schizoid i know).
Tl;Dr - Every time i see one of these comics i want to punch the author. I literally have a personality disorder that renders me about as interested in social interaction as a carnivorous spider and I'm fine, so what the fuck is their excuse?