> Interestingly, women who were not parlor girls or dancers were typically not allowed entry into these establishments.

From the article

Selection bias of the pictures they decided to show, I guess.

By the way, there is another one with them ridding horses.

It is not even slightly weird. Consumption of alcohol by women has always been frowned upon, especially in public houses, not least by women, and survives today in the shaming of pregnant women who drink even the smallest drop of alcohol at any stage of pregnancy. Women were prominent campaigners against consumption of alcohol, especially in the USA, e.g. Woman's Christian Temperance Union, leading to temperance laws in several US states and ultimately the Eighteenth Amendment of the US national constitution which launched the notorious Prohibition Era.

Also, even past the middle of the twentieth century, in the UK and Australia at least, it was normal for there to be a separate "public" bar" in pubs for men only and a "ladies bar" or "saloon bar" where women were permitted entry.

They do that to make it more entertaining to watch, but no, there were very few women. Those that were there would stay at home/farms or seen at church.