I have to disagree with you on that. Cryptocurrency needs to evolve and grow for it to be mainstream. We already know that blockchain technology will be the future and it is only a matter of time before it is widely adopted. Like all technology, we saw the flaws of bitcoin and other cryptos like railblocks, iota, and cardano are offering solutions. I can use the same comparison to back in the AOL, Netzero, and Netscape days of Internet 1.0. Imagine still using dial up? So yea, Bitcoin will be obsolete soon and will only be used as a store of value.
Correct me if I am wrong, but a currency or platform that makes changing one coin for another easier and reduces the high transaction cost of mined currencies would a) be a step in development and would b) make adoption easier.
I am well aware that there are some tokens that already aim for that direction - for example bancor. But bancor is a ERC20 token and I know a lot of users that are complaining about really high gas prices when they want to exchange. I know that this is a long road we still have to go, but I think for a really good adoption by "everyday people" a lot needs to happen to simplify the buying process (talking about most alts and tokens here, buying btc or eth is fairly easy already). But try to explain your spouse or your parents how to buy coins on an exchange or what to do with your coins should something ever happen to you.