Asking for a citation is asking for bad manners? Normally, if you posit something, it's on you to back it up, or admit it's pure anecdote or impression. I don't see how asking for a piece of information that's claimed to exist somewhere in the world is disrespectful.

Also, I did look it up. None of the articles I saw specifically called out laws Uber was guilty of breaking as a corporate entity, instead they all reference grey area behavior and use words like 'skirting' or 'undermining.'