I frankly don't believe that this guide alone would have solved as many issues for you as it would also cause. What is presented as universal wisdom is never that simple. The "nobody taught you" aspect is not universally true. I counted ten items in the list I was taught in school or by my parents. I'm not the center of the universe but we can extrapolate that some people have been taught some of these things in some setting. So there is already a mistake in the headline.

This "cool guide" is either redundant (letting people exit a place or the elevator first are roughly the same thing) or not specific enough (letting people exit buses and trains etc. before you enter is missing). You should also offer your chair or seat to those who need it more than you (e.g. pregnant, old, or injured people). You don't have to offer a replacement date if you cancel an appointment if you canceled in the first place because you don't want to hang out with an asshole. You don't need to clean up a mess you made while running outside while the house is on fire. There will be instances where you don't need to return a borrowed item in the same or better condition than when you borrowed it. If I lended you my dirty lawnmower I would not expect you to clean it or sharpen its blades before you returned it. The additional wear and tear is factored in already.

This poster gives the impression to contain simple, universal, virtuous truths. But none of them are always simple or always logical. They are at best a patchy guideline missing even more unarticulated conditions and exceptions that render them useless. And if you aren't aware of the missing bits, you'll still have awkward social interactions.

My suspicion is that somebody created a list of things they thought was the epitome of wisdom in general social interactions, in the US and not in a city with public transport options. They possibly used so-called AI to compile this list. It's even more likely that they used it to design the poster and to draw the little pictures. And then posted it online to be praised for their effort (don't aura farm ought to be a bullet point on this poster as well). It deserves to be criticized.