"left propaganda" BAHAHAHA that's like complaining about seeing people using science in their daily lives or talking about science and calling it science propoganda
being right-wing is inherently irrational and anti-science, there is no room to complain about "left propoganda" especially when UBI isn't even inherently leftist, UBI still exists solely to prop up a broken capitalist system making it live on the right of the political spectrum. left propaganda would be advocating for socialism or something, this is just advocating for welfare capitalism (which has been proven to be far better for the populace than other forms of capitalism in use).
this post doesn't even state an opinion on UBI though, so it's weird that you took it as "propoganda", or even "political". it's literally just proportions. it's really hard to take someone who's saying "the objective truth is just political propaganda" seriously.