You ARE being preachy. You're calling people who drive SUVs 'rude about' actually being climate deniers, with zero effort applied to try to understand and empathise with what might motivate these people.

It's so easy to point to other peoples apparently wasteful behaviour from a distance, and much easier than introspection. So the question is reasonable: Have you "deliberately" been on a not-absolutely-necessary long haul flight this year? Because then you don't really have anything to tell families who prefer SUVs.

This 'If you're not a vegan bicycle rider don't tell me what to do' logic is absurd.

The point is that people have so little understanding of what is going on with the climate they won't even modify their behaviour slightly, even when getting a sedan with higher efficiency and better safety will cost them much less.

So no, I'm not calling SUV owners rude, it's a rhetorical device to highlight that they are metaphorically thumbing their noses.