In the video says "in America." You should note that historical precedent may be set in some place, but does not prevent it from evolving elsewhere, either at the same time, or at some other point in the future... for example, the invention of the wheel. While one may give credit to where it first was invented, that does not mean that every instance henceforth originated from the initial discovery.
In the case of tipping, in the United States, it actually predates just after the Civil War; except in the context of the video, which applied to all free men following the conflict. Tipping, in the United States started as a bonus payment to slaves and indentured servants. Both groups were not entitled to "extra" payment, as they were hired out by their those who owned them, or their contracts. Tips allowed a number of those persons to buy essentials, and in some cases, even their freedom. There was no obligation, by the employer, to compensate the worker, anymore that the worker's owner required. Slaves also, with their owners approval, could hire themselves out to make money in their free time... but again, there was no legal obligation to pay them a wage.
Following the Civil War, there was an influx of former slaves looking for employment. Given that the vast majority did not have skilled positions, or would not be allowed (if skilled) to complete for those positions, they were relegated to jobs in the service industry. Employers balked at the idea of having to pay, what they considered, an inferior a standard wage, so those former slaves given employment without a wage, relying on the generosity of patrons.
You may wish to believe that a practice that originated in Europe in the 1600s, slow rolled it's way, as a natural transition, across the Atlantic to be seamlessly applied in the United States, following the emancipation of a enormous slave work force, which was still regarded as inferiors, 200 years after the fact, but I do not.
I would hope, that rather that making a it a personal matter, which I have tried avoid, you would rather attack the facts, or (if you believe differently) non-facts, presented.
An alternate view, predates the current (embryonic) civil war
A history of tipping - Business Insider
Danny Meyer's anti-tipping policy is nothing new — 6 states once banned the practice
The custom originated in Europe, and while its history is not entirely clear, it is commonly traced back to 17th century England. The word "tip" is speculated to be an acronym for "To Insure Promptitude," which was printed on bowls in British coffeehouses.
What is today considered a given started as a purely aristocratic practice — a mere "allowance" that the upper class would offer to the socially inferior.
It made its way to America after the Civil War (which ended in 1865), when wealthy Americans started traveling to and from Europe. They brought the custom back home to show off their worldliness, but it was immediately met with disdain.
Americans considered it anti-democratic, as it encouraged classism and further distinguished the wealthy from the masses.
Service 101: A Brief History of Tipping ? Food Woolf
Service 101: A Brief History of Tipping
According to an article that appeared in The New York Times in 1897, there was a movement brewing against tipping in America. The anti-tipping group believed that tipping was the “vilest of imported vices” because it created an aristocratic class in a country that fought hard to eliminate a class-driven society. In 1915 six state legislators from Wisconsin, Illinois, Iowa, Nebraska, Tennessee and South Carolina attempted and failed to pass an anti-tipping bill that would make leaving gratuities unlawful.
In 1916, William Scott wrote a stinging diatribe against tipping in his book, “The Itching Palm,” in which he stood up against the policy of paying for a service twice (once for the employer and once for the employee). He decried tips to be “democracy’s mortal foe” and creates “a servile attitude for a fee.”
In the American democracy to be servile is incompatible with citizenship. Every tip given in the United States is a blow at our experiment in democracy. The custom announces to the world…that we do not believe practically that “all men are created equal.” Unless a waiter can be a gentleman, democracy is a failure. If any form of service is menial, democracy is a failure. Those Americans who dislike self-respect in servants are undesirable citizens; they belong in an aristocracy.