If it's "recreational carbon emission categories" you want to ban, whether as a proportion of global carbon emissions or recreational carbon emissions per perso

If it's "recreational carbon emission categories" you want to ban, whether as a proportion of global carbon emissions or recreational carbon emissions per person, then I think there are much larger categories that would be banned first. If you just consider aviation, there's a really wide spread: people travelling the world in private jets cause orders of magnitude higher carbon emissions that someone enjoying the local area in a microlight. It seems odd to bundle them into a single bucket since this spectrum crosses so many other more typical non-aviation activities in magnitude of emissions that you don't seem to be suggesting banning. If you want to be discussing recreational carbon emissions you should use the size of those emissions to discriminate, not some very broad arbitrary category that varies in emission magnitude across the entire spectrum of the emissions that you're simultaneously ignoring.