There’s a big difference in that type of cyclist and someone that’s riding a bike in street clothes for a commute. And it doesn’t make sense to act like they’re the same.

No there isn’t at least not a large one, cycling costume or not has almost no bearing on whether the ride is for recreation/fitness or for getting from a to b, often both are combined. If you had a 30km commute on a bike you’d also try to wear clothes that make it easier to get there quickly and you would use the most direct route and this is what most cyclists are doing when people get annoyed by them.

Plenty of people are doing their commute as their training ride because it makes sense to do so, why should they have to drive their car half an hour and do an hour of cardio instead of their hour cycle commute, just so you can arrive a minute early come on.