I agree with your point. It can be hard for a US native English speaker to recognize a Scottish accent.
But, other Scottish people certainly don't have trouble with understanding a Scottish accent. So I view that as a certificate that we should be able to build a speech recognizer which can recognize Scottish accents.
But, other Scottish people certainly don't have trouble with understanding a Scottish accent. So I view that as a certificate that we should be able to build a speech recognizer which can recognize Scottish accents.