https://www.cincinnati-oh.gov/bikes/linkservid/F0E0B518-AC88-B041-B32B86DD807A3FC8/showMeta/0/#:~:text=Page 13-,IS IT LEgAL TO RIDE ON THE SIDEWALk%3F,of all ages) with pedestrians.
According to the Cincinnati bike laws (link to them above), unless you are under 15, it's illegal for you to ride on the sidewalk (pg 9).
I would report the employee, not as a complaint, but to ask his superiors if they would sit him down and make him read - out loud - the contents of the booklet.
That is, assuming the jerk can read.