I got an Italian friend to translate a few bits:
"I've had cancer but i'm way more alive than a lot of zombie-like youth"
HAD. Very clear about the past tense, my friend was. Remember that bandage on his hand? Maybe that was a thing, maybe not, maybe Barrett's, maybe not, but the past tense is clear.
Also:
"I've had some shocking experiences, but this is something that can happen to anybody. Nowadays everyone seem to be dying of cancer, i believe it's due to the pollution, industries and modern medicine. We're all under attack"
And finally, a bit about Bowie, a little dig, as ever!
"{about Scotland} I believe Bowie hasn't lived here since 1973, and Mick Jagger since the 60s. I don't understand why they have strong feelings about it, it's just too easy for rich people to have an option when it has no consequence on their lives"
So ok, just sayin - he says it's not current according to this interview. He wouldn't be playing live if he was still ill.