If you only call graffiti the so-called "street art" then yeah but when most are bullshit tags from teenagers in the same cliche style with 0 creativity then it's trash.

And the problem is that 99% of the graffiti in the world is trash tags in stations/trains which has the direct impact of giving a rough feel to any well-meaning location.

So to me, that kind of graffiti is the result of a "me important" mentality which totally disregards the rest of the community who just loses in all fronts (including aesthetics and monetary).