So it is a column that is a collection of short opinions on various matters. I presume it was submitted because of the "Vest" section, YC funded startup that sells option strategies to the investors.

Yes, the point that big finance has the economy of scale in option trading is true. But only if you are able to fit into the scale of their operations. Big finance reaction to the retail investors is very well summarized in the GS Elevator tweet (parody account, no relation to the GS, the investment bank): https://twitter.com/gselevator/status/189798000078499841 ("Oddlot" means a position of less than 100 stocks). So there _might_ be some value to be created in the retail investor niche.

Edit: according to another comment, Vest does not sell odllots either, and their products seems to be seriously overpriced, so I am not sure what their value prop is exactly.