extremely online 

Someone who spends so much time online that it becomes their whole world. Used to describe someone who speaks with a lot of internet vocabulary, uses meme references in everyday speech and is deeply ingrained with different subcultures of the internet.

Often used as a way of dismissing someone for getting angry on Twitter, especially when it's about something political.

"If you've been scrolling through my feed all morning and calling people racial slurs, I don't have time for you extremely online people, take a break."

extremely online by AlGetcha January 29, 2021

Extremely Online 

The chronically online version of "chronically online."
Basically, the politically correct way of saying that someone spends far too much time online, thus corrupting their brain with insane people with limited knowledge's takes on social issues instead of listening to people with real-world experience and/or education.

A: "No way that mf just said that it's offensive and non-inclusive to say "y'all" lmaoo, how chronically online do you have to be?"
B: "Errr… ACTUALLY, it's extremely online."
A: "Oh God, they got you, too."

Extremely Online by Updated Magic September 3, 2022