Just finished writing a post on someone else's thread about it:
They were smart enough to set their supply to way fewer coins than most cryptos, and that attracted a lot of attention from everyone. If you were to multiply the 30k supply by 700 times (to get to BTC's max supply) and then divide the current price (~$29k) by 700, at Bitcoin's supply it'd be worth $41.5 right now. It's a very very vague calculus but I'm only considering the supply & price/coin.
In other words, it may be more expensive than Bitcoin but do people really not care about anything else besides price at this point?
As you are a Newbie, I would highly recommend you not to jump straight into the pumped coins if you're contemplating to. YFI may be $100k in a week or .. $1k. Volatility is a thing. You just don't know, and the timing is imo very risky right now. It's been a long time already since it's been very bullish. Coins that have really hard pumps usually have a period where the hype bursts out, and the price almost always follows. Therefore, just be careful when investing and make sure you don't get yourself screwed up by false hopes.

I agree with this, coins that pump so high in a short span of time can also dump fast. Learn first is the demand for this coin will last for some time, this van just be a result of fomo going around. It's better to understand things first before going in, don't get easily influenced by other's opinions about a particular coin, do your own research and TA.
What I can only say about $YFI right now is that it is not overpriced when it comes to its P/E ratio since there are so much partnerships from big companies that solidified its position on the market.