UNI didn't change a lot but it gives only another way for people to exchange their ethereum assets easily rather than try to send it first to the cex but the fees is also very high because it's totally depend on the ethereum network.
Uniswap is the best & first AMM (Automated Maket Making) system which boost all Defi and NFT markets. But it's true that transection fees on uniswap is greater than expected for ethereum's gas fee which is happened because of higher adoption of defi projects. Hype of Defi/NFTs are greatly helped by uniswap to make higher levels on this market. TBH, it won't get that much hype by any Centralized exchange as for anonymous transections.