I am just curious why defi projects name starts with YFxxx keeps increasing, it's crazy it looks like they are just a copy of one another,  a redundant token and some even listed on binance. I guess the first one was yearn.finance (YFI) and it gets attention with a huge price but with a very low supply. I guess that is why this YFxxx tokens are popping out from nowhere hoping they will get same success with YFI. Is this really beneficial and useful?
If you visit telegram, twitter, etc. there are so many scam projects starts with YFxxx so beware of it.