> It's not usable as a currency except in the most dire circumstances and no one is working to fix this. Transactional currency has been abandoned as a goal by every major crypto project

That's simply not true.

https://bitcoinmagazine.com/industry-events/jack-mallers-add...

https://www.youtube.com/watch?v=dD2-T7TX2rk

Shorter version of the above: https://www.youtube.com/watch?v=o73fWsqJDdY

> it doesn't make a sensible replacement for currencies in functioning economies.

As covered in Jack's presentation, merchants may appreciate saving 3% on every purchase.