What is the new "2.O" Trend in meme coin?

Few week ago a normal crypto dev deployed another degen/shitcoin called "doge 2.O" on Ethereum chain and then the founder of "dogecoin" liked the tweet made my doge 2.O official twitter account, after his like doge 2.O begin to fly and then other devs started to deploy many 2.o tokens. Such as pepe 2.O, squid 2.O and so on!