Are people actually using BTC in Venezuela, or do they just claim to be from Venezuela, and are asking for donations into their wallet?

> Or for people without a bank account?

I'm having strong doubts that you actually understand how the world banks. There are hundreds of millions of people who don't have bank accounts, and use electronic payments through their cell providers.

Western Union will let you put physical cash in someone's hand from across the world if you are willing to pay their fees.

Venezuela barely has a functioning electrical grid, so cryptocurrency would not seem to be a foolproof solution there.