Of course it’s graffiti and it’s still imposing on others against their will, regardless of whether it’s peak narcissist Banksy or someone else. Is very much about transgression and imposition and sadistic domination for personalities like Banksy and graffiti artists in general; it’s precisely why they put their “art” in other people’s things against their will.

So if I graffiti your car because I believe it improves your car; would that be ok with you? It’s art. You should be happy, right?