I just used the same source out of simplicity, I didn't double check as that wasn't my point. It would indeed be better to have more recent numbers.

Not seeing homeless people doesn't mean they don't exist, seems like Japanese streets are mostly devoid of homeless people, but a lot of people seem to be living in cafes, to avoid ending up in jail as as far as I've understood, the government has a harsh policy towards that. Might be wrong on japan, but again, I'm not trying to point fingers to a country saying they are bad or good, it's the argument itself that I find "weak".

PS: just to be clear, I do feel that first of all, the OP should be the one trying to prove their saying. Nice of you to try and debunk it though