It may differ depending on countries, but I tried sending $8k USD to Malaysia and it took some time. Can't remember if it was weeks or days but point being it wasn't as instant as crypto can be.
Also, I think you're neglecting to point out the rigmarole involved with making a Wise account — connecting your bank accounts etc. And the recipient might also need a Wise account for instant transfers (but I believe Wise becomes a custodian for your funds in that case).
Crypto wallets can be generated by the click of a button. I think I taught my mom how to make a crypto wallet at some point. She didn't understand how to keep her crypto safe, which is its own issue, but wallet creation is easy.
I'm far from a crypto maximalist, but nigh-instant transfers with very little fee is a very attractive benefit of crypto.