black folk don’t tip?

“Black folk don’t tip”?
We need you to chime in on this one. Is this a question of class? Of culture? Of race? Is there any truth to the statement at all?
Web series ‘Black Folk Don’t’ is asking some questions here.
They say: “In some cases, “Black folks don’t” is a statistical fact. Black folk don’t go to the doctor in the numbers they should.
In other cases, “Black folk don’t” is an anecdotal idea and concept that is based on a negative stereotype. However, stereotypes are based in truth and in some cases, these ideas are true about Black folk. Ask any waiter. Black folk don’t tip. It’s just true. But Black folk do tip their hairdressers or barbers so go figure.”