You can see all listed coin/tokens on UNISWAP on here.
https://coinmarketcap.com/exchanges/uniswap/from CMC, we can see there are ~40 coin/tokens listed on there (5 of them don't have any volume anyway). I don't think it's scam or not, but rather about pump and dump coin/token on UNISWAP
maybe i looked not at cmc but coingecko and i don't see any oddities happening there still looks fair trading and goes well and volume is quite high. Until now, I haven't heard about this information or maybe I missed it. but I agree with the colleagues above that there is nothing strange, we will wait for the latest news later.