As you said it has got high commission, but it functions with legitimacy. Particularly for people who find it hard to change their holdings through the trading process can make use of it with ease. The chance of fake contracts is very low, because before adding a single token to the list its been cross checked for legitimacy. You need to be careful handling the commission, apart from that there is no big caution need to be taken.
There are 10 fakes for 1 official contract. You can see for yourself how counterfeit coins are stamped and in what quantities
https://t.me/AllUniSwapListings . Contracts are not verified for uniswap. Many people fall for the tricks of scammers when they cannot exchange the purchased coins back for Ether. I myself have lost 2 ethers in this way.