When an evolutionary scientist publishes a paper, do they have to reference or recapitulate the theory of evolution? No, because that position is scientific consensus. Ditto for the hypothesis that smoking increases cancer risk.
Consensus doesn’t mean “impossible to change”, it just means it is generally agreed upon. If some evidence about smoking and cancer comes out down the line, the consensus can change. It’s still the consensus, though.
You seem to hate lots of things and this subject makes you desperate to call yourself a specialist. There are 3 days you have been desperately trying to shutdown discussions in this thread. What is your problem?
I’m not interested in poor attempts at mind reading (“this subject makes you desperate to call yourself a specialist”) but I’m happy to discuss the evidence on this subject if you’d like.