Pusheen the Cat?

So like I've seen a couple of them on chess.com and I either know them personally or I know ppl who know them... is Pusheen the Cat like an inside joke or whatever coz I don't get it 🤔

I mean ik it's a book and it's rly cute and stuff but... idk I guess I'm just wondering if it's like an inside joke

I never see it on the internet...

http://www.pusheen.com

Here is the website, it was created around 2010. There's gifs, comics, march, and a book

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣀⠀⠀⠀⠀⠀⠀⢀⣀⡀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⠊⠈⠑⣄⠀⠀⠀⡰⠋⠀⠙⢆⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⡰⠃⠀⠀⠀⠸⣶⣶⣶⡇⠀⠀⠀⠈⢦⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠒⠒⡶⠣⢤⠀⠀⣀⣀⠉⠉⡄⠀⢀⣶⣦⠀⠈⢷⠉⣉⡉⠀
⠀⠀⠀⠀⠠⠖⣾⡃⠒⠚⠀⠀⠻⠟⠀⠦⠷⠖⠀⠙⠉⠀⠀⠈⣏⠀⠉⠀
⠀⠀⠀⠀⢀⣾⣿⣷⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⡆⠀⠀
⠀⠀⠀⢀⣞⠛⠛⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠹⡀⠀
⠀⠀⢠⣿⣿⠄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢧⠀
⠀⢀⠿⠿⠟⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠸⡀
⠀⡜⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡇
⢠⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡇
⢸⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡇
⢸⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡇
⠸⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⠃
⠀⠹⡄⠀⢠⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⠏⠀
⠀⠀⠘⢦⣾⣿⡷⢲⣤⣄⣀⡀⠀⠀⠀⢠⠀⠀⣆⢰⠀⠘⡆⣀⠔⠁⠀⠀
⠀⠀⠀⠀⠉⠻⠅⣾⣿⡿⢀⣿⣿⣦⣀⣸⡀⠀⣸⠼⣆⢀⡏⠁⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠈⠉⠉⠉⠉⠀⠀⠀⠑⠒⠁⠀⠀⠁⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠒⠒⠒⠒⠂⠀⠂⠀⠀⠀⠀⠀⠀⠀⠀