Currently altcoins have good potential to replace bitcoin, ethereum, Cardano, BNB and Ripple are altcoins that have strong potential at this time. Personally I prefer altcoins to replace bitcoin because it will keep the market.
You are going to name these centralized shit coins with unlimited number of coins and especially coins that are heavily pre mined and the developers control everything about them, then what is the difference between government controlled currency and centralized cryptocurrency. You cannot compare Bitcoin to any of these shit coins to be replaced in any shape or form, but i get it the investors who does not care about these and all they want is profit will always support these projects.