"surface=bitmac" handling

I recently travelled to an area where a number of paved cycle routes were showing as "unpaved" on cycle.travel

On digging into the streetmap data, it seems this was because they were tagged with the "bitmac" surface type, instead of the more common "asphalt".

Could this be added to the list surface types cycle.travel considers to be paved? From what I can tell, bitmac/bitumen is merely a specific type of asphalt/tarmac, and the difference is immaterial to a bicycle.