Doesn't UBI come from taxes? I can't reconcile the idea of welfare for everyone resonating very well with any of the libertarians I know. Personal charity, sure, absolutely, but not government controlled payouts to people, even if that includes everyone. They would probably consider it better than the current welfare system with all it's bureaucracy, but that's as positive a response as I can expect.

Most libertarians I know (and I consider myself an on and off libertarian as I learn more about it) want the government to stick to making sure people's rights aren't being trodden upon and otherwise leave us alone.