No, no one really cares about homogeneity. Big name apps geared towards music, photo, video, 3D, GIS, IDE … have always looked somehow differently designed and for a good reason when compared to the browser and file manager.
There is more value in design than consistency on production oriented systems. It seems the contrary is preferred for mobile.
Those big-ass different looking applications on desktop you mention are creator's tools. It makes sense they differentiate (specialize) their UX to deliver maximum utility, especially important to carry it over a decade or more of OS design transitions. Of course they look different.
Mobile devices are by and large meant for and used as consumption tools. So consistency is desired there.
There is more value in design than consistency on production oriented systems. It seems the contrary is preferred for mobile.