The note actually said “black people are very poor tippers”.
Many years ago I managed a restaurant/bar....I once had to threaten to fire a young black man for refusing to wait on black people, no joke he said “I don’t wait on black people cuz’ they don’t tip”....
Or perhaps Yoda wrote the note.
It actually said, "Service great it was. Black people don't tip."
As a former bartender, that is a fact. Awful tippers. And make monadecst the table.