I assumed [s]he meant to say YouTube doesn’t make a profit. Or at least doesn’t seem to make a profit as a stand-alone entity. Not completely sure if that’s true but it seems like it still is or is unknown.
I actually googled that recently (in response to this announcement) and they seem to be break-even or possibly profitable. But yes, they were unprofitable for a long time.
They don't disclose their separate financials so no-one not related to Alphabet knows for sure.
