I think its diffucult for them to access bitcoin. They need a lot of things like having a cellphone or computer. I think they still need a lot of money on that. Aside from having a cellphone they also need to have an internet connection. If they have all these then they might have an access. Thats why its more covinient if we just give paper money to the beggars, its more helpful for them to buy food or whatever they want to buy.