Huh... this is not what came to mind when I heard the phrase 'internet brain,' I have to admit.

I was thinking more along the lines of being terminally online, I think - y'know, when your brain starts throwing out memes etc. in everyday scenarios, and you de facto use the Spongebob voice in your head for 'a few minutes later.' Oh, and when fanfiction means that you know logistics and terminology you wish you didn't because rule 34 (...and also that you know what rule 34 is without checking Google or Urban Dictionary.)

...Maybe that's just called 'being a millennial and/or gen Z'! Lol.