I think there's danger of going over the top about all this. No smoking in confined spaces where the smoke can't rapidly blow away seems quite good enough for me.

And if people can get some kind of exemption for places which are specifically set up as places for smoking, like Shisha bars, that'd be fine too, so far I'm concerned. (And smoke from hookahs always smells so ucgh better too, even when it's from tobacco.) Though the issue of such places being workplaces would come in here, and no one should be expected to work in a smoky environment.   Some kind of serve-yourself, tidy up after yourself, system could be developed to sort that.

But the truth is, so many places are so much more pleasant now than they were a few weeks ago - pubs, cafes... And the streets are better too, with all those cheerful tables, and people sitting outside with their drinks and their smokes.