I think you hit the nail on the head. Most people who genuinely want to use cryptocurrencies as a replacement for classic ones in legal day to day transactions don't realize the drawbacks. There's an implicit assumption that by being a "currency" crypto gives the same benefits as a classic one, plus the digital aspect and other advantages.

But I like to think this is like buying medicine from a street dealer. Maybe it's faster or more convenient, maybe you get the same quality. But those "maybes" are clearer for people when buying medication from a back alley. It's not at all visible to people using crypto as a replacement for their classic currency.

Every time there's an exchange hack, a massive fraud, a price crash, etc. more people start feeling the drawbacks and push for the kind of regulation, oversight, supervision that today are antithetical with cryptocurrencies and its associated parties.