Why do people call him y0y and not yay?

I've seen multiple forums and twich chat call yay, y0y or yoy. I don't really know where that came from, maybe im not in the loop? someone explain please

0 instead of a because thats how many kills he get

this is a meme. when any player played shit. we add 0 in his name.

For example: in cs2 when s1mple played bad, people call him s0mple

Also u can add number how many kills player got.

yuy

y0y because 0 is the amount of international tourney's he played in 2023 (except LOCK//IN, we don't count that)

Shut the FUCK up.

its a slur that yay haters use, cringe shit