UBI is not a replacement for universal healthcare, in the same way that unemployment benefits are not a replacement for public education: they both may be related somehow, but they do not overlap completely.
The healtcare-system is not responsable for social problems, usually it's not even financed from the same sources, at least in germany. And a universal healthcare-system is not part of UBI. It's also somewhat questionable whether it's possible to finance them both equally.
When people talk about UBI, they usually forget the healthcare-problems, because that's a big financial burden which will sting the posibility of UBI.
