This is discussed in some other threads here. But basically, if you live in a jurisdiction where it’s easy and safe to get and hold substantial amounts of USD, this is not for you.
The reality in many places is that getting your hands on USD happens through grey-market street dealers who charge exorbitant conversion rates, and the only way of holding them is under your mattress because the local banking system can’t be trusted. As in, if you’re able to get a USD bank account (this is a big if), you likely won’t be able to actually withdraw your USD in any substantial amounts when the need arises.
Sorry for the late reply - and I'm not sure if this is covered in other threads... but...
I'm not seeing an argument for an account denominated in crypto as being advantageous over an account on the same platforms denominated in USD (or Euro or whatever)
The argument you seem to be putting forward is one of "digital is superior to physical" - which might be accurate, but still leaves open what currency is best.
edit:
It could also be said that the crypto "wallet" is transferable amongst exchanges, but finding someone willing to trade physical goods or services for that crypto is the next problem, whereas the USD is already accepted/easily transferable to people with accounts.
The reality in many places is that getting your hands on USD happens through grey-market street dealers who charge exorbitant conversion rates, and the only way of holding them is under your mattress because the local banking system can’t be trusted. As in, if you’re able to get a USD bank account (this is a big if), you likely won’t be able to actually withdraw your USD in any substantial amounts when the need arises.