Using Venmo or Zelle obviates the reason for using Bitcoin to move money from one country to another, which is that you don't want the transfer to be traced, and you may or may not have access to the banking system where you're going (eg the enormous flood of Bitcoin out of China and Hong Kong during the crackdown). Venmo and Zelle are American banks that just add a new type of KYC endpoint. From there, it's easy to see the whole blockchain back to where you acquired it.

Localbitcoins facilitated a cash exchange that was extremely useful for people seeking to move money out of repressive regimes and convert it into local currency they could live on.

To your point, that money didn't have to be acquired on Silk Road or something... I used to get paid for work in BTC, and used it to pay rent for a couple years in Argentina by selling it to a dude I'd meet once a month at a Starbucks.