Since they call it a Pro, I assume professionals use it to connect devices they already own. Audio/Video professionals need to connect several audio interfaces,

Since they call it a Pro, I assume professionals use it to connect devices they already own. Audio/Video professionals need to connect several audio interfaces, external HDDs, SD Card readers, external monitors/projectors, headphones, maybe ethernet if the wifi in a hotel is spotty, etc. Asking someone to spend hundreds of dollars on adapters on TOP of the already expensive hardware and calling all these usecases "legacy" is insulting.