> Note that a 568 ml pint of beer of 5% strength is by this definition 2 drinks.

Yes it is. I can always tell the difference between drinking a can of it versus a pint, it definitely does feel like twice the effects.

> if they are saying it causes ill health, I don't believe them

I mean you can believe whatever you want but the scientific consensus is that any amount of alcohol is bad for you [0]. Just because you and your friends didn't have ill effects does not mean that it was actually good or even neutral for you all, and statistically and biologically it's been shown to not be so either.

[0] https://www.who.int/europe/news/item/04-01-2023-no-level-of-...