Maybe. Quick aside, as someone who went to an inner city high school in the 80s, I remember when break dancing was cool and really new. At the time, general belief was that break dancing was NOT dancing.
40 years later, and you're referring to break dancing as "proper", and the other stuff is "bunkum." How far we have come.
But to the point of the thread, I think folks who are athletic are going to appreciate benefits of their athleticism in any physical activity.
But I don't think kata, for example, and break dancing are all that close.
Look at it like this. Get a ballet dancer (graceful, strong... really strong, athletic, flexible, etc) and ask them to break dance. Or get a top level break dancer and ask them to perform ballet. How much crossover is there? I would say little, and the same I think is true for martial arts.