Bottom line up front: I loved this video. We need people who can humorously point out when the emperor has no clothes. But I'm not convinced that contradictory standards of acceptability are bad...or avoidable.

To the best of my knowledge, cultural conventions and norms are always full of idiosyncrasies like these. I don't think any rational system would sit down and write a list of what is and is not socially acceptable with nearly as many asterisks as the lists produced organically by human culture. (If anyone can find a culture with perfectly rational social norms, please let me know! It'd be fascinating to read about.) Frankly, I'm not sure humans can even make a coherent set of cultural norms or standards.

When I was younger, I used to be exasperated by this. "How can any culture accept x but not accept y?" At some point, I realized that every society had its x and its y. I've come to believe that cultural standards are produced by a committee. The thing is, the committee is each and every one of the culture's members, there is almost no framework for coherent communication amongst all its members, and many of the committee members have been dead for decades. This system will produce irrational or incoherent rules with some regularity.

I still think it's a good idea to try to point out and suggest changes to cultural idiosyncrasies, which is why I love this video so much. But if I think a society that produces idiosyncrasies is unfit, then I may have to assume that all societies are unfit. That's not how I want to live my life.

tl;dr: No set of cultural norms is perfectly rational. I doubt that's possible. Acknowledging the irrationality is good, but I don't hold the irrationality against any individual culture.