Older people do not adopt Bitcoin or any new technology very easily.. I struggle to convert people to the Bitcoin idea, once they reach the mid 30's and older. They have been
used to fiat for such a long time, they have been brain washed to think that anything else is a scam. Still a good idea, to target the younger generation.
You are right it is difficult enough trying to convert people around you nevermind the older generation. I think it was on the kickstarter page it mentions how you can link your bank account also and that there are multiple payment methods and not just Bitcoin. Seems they have thought about this issue and have kept it quite open. I hope they get the funding they need.