Scam tokens are always present in healthy market so even in Respective exchange there is always scam and ponzi.
And now this Uniswap?after climbing that fast?for sure those scammers are going with the flow now and trying to ride in Uniswap popularity.

But distinguishing scam from Legit is a though Job and only Market experts can analyze and name them.

But there are already some Scam projects that has been mentioned in some thread here in altcoin.
But of course Greed will always bring those noob to become victim,.