Then I hereby want to bet £1000,- for any physician which can test me and tell me how much alcohol I’ve drank the past 20 years, if they claim they can see the damage in any kind.
Read it like: "any amount of gambling may lose you money". The damage is proportional (and to some extent probabilistic) to the amount. As opposed to say: "any amount of horizontal speed may put you into orbit", which is not true ofc, there's a floor below which you will come right back down. Its a distinction between something which has non-zero levels that have no effect and something where the effect scales all the way from 0. It's a statement about populations obviously, diagnostics have finite precision etc etc, but it holds true as far as we know.
