100% car enthusiast are the same but people taking their cars to weekend meetups or some illegal races are tiny minority of all drivers. Where I see more extremely loud bikes than cars even though there are way more cars on the roads than motorbikes. I've seen stats form Europe saying that 70% of vehicles exceeding noise limits are motorcycles. I don't know what % of motorcyclists are loud idiots but looking at the roads I can see that it's way more common in this group that among car drivers. I'm sure this can vary by region thought.