I think the '$21 to make a transaction is a deal crowd' often forget that there are billions of people happily transacting with each other for nothing every single day.
There are also many, many people who'd be delighted to come up with something which works along similar lines to Bitcoin but doesn't cost a fucking fortune to move dust out of your wallet.
There's a real world out there, the overwhelming majority of which doesn't give a shit about crypto and will give even less of a one if the costs of a ticket to ride is so ridiculous.
I also live in that real world. Because I know how to handle dust in my wallet, it doesn't cost me anything extra. Anyone can do it, you just need to know how.