I am very enthusiastic about crypto. my last few trades were on the DEX market. This is no less scary than the futures market. but they provide many benefits with low capital with high increases. but it is very difficult to find fundamentals there, because there are countless new coins released in a day. and DEX is not suitable for those just starting out.
dex was meant to give easiness for new coins to get listed and also it isn't really for the purpose of trading but instead for swapping and investing I think that what makes cex difference if compared with dex aside from the perspective of decentralization, thats why sometime liquidity in dex also really low that sometime the trading volume in cex is about few millions and in dex its about few thousand dollars.
cex integrating dex features is just a business decision for the sake of getting the best of both worlds.
but yes, its true that dexes usually aren't really newbie friendly, cex usually are more friendly for newbies considering UI and don't need to think about the gas fee and many more, its overall suitable for newbie because it was designed with that in mind meanwhile dex give alternative with its fast nature of swapping.