Prior to the current generation of very fast EVs, having a louder vehicle was a way to indicate more power. A more powerful (internal combustion) engine implies more noise. Of course the reverse doesn't apply, more noise doesn't strictly imply more power - it can just be an exhaust with lousy noise suppression. ALSO you might eke a little more power from an engine with less back pressure from the exhaust, so there is some real effect available.
So if you've got some modified monster with an insane engine, it's going to be loud. And if you're a wannabe with a superficially-modified, underpowered car, you can add more noise easier than you can add more power, and hope to fool people. It's not very laudable, but you can see how it could motivate the ego of the inconsiderate.
Sure, and I get that I suppose. Driving fast ICE cars is a fun but different experience. What kills me are Honda civics with "performance" mufflers that muffle.. less.
So if you've got some modified monster with an insane engine, it's going to be loud. And if you're a wannabe with a superficially-modified, underpowered car, you can add more noise easier than you can add more power, and hope to fool people. It's not very laudable, but you can see how it could motivate the ego of the inconsiderate.