As with public transport (Ian thinks is easily available to everyone because he lives in London), because he smokes it’s OK to breathe smoke all over people who want to sit outside. There’s nothing worse than trying to enjoy a pint with someone smoking like a chimney near you.
Banning smoking in an outside space is the worst kind of prurient, hectoring, interfering, puritanical bullshit. No health basis to it whatsoever. Just a flat-out act of social control.