I posted a comment on YouTube exactly once in my life (providing the lyrics to what the person sang), and plan to never do it again. I usually scroll through others’ while watching.
I cannot possibly be the only person who does this, especially since some peoples’ comments garner a bunch of thumbs ups and actually coherent replies in addition to the usual trash you see on YouTube (spam or totally out-of-pocket insults).
I wonder where you are getting all these memes from! I post when I have them, but I do not have as many so I am posting at a much slower rate than you.