Perhaps you could provide a direct quote from Baum. The story that Baum was allegorizing economic theories of the 1890s came from a man named Littlefield.

https://www.offthegridnews.com/misc/following-the-yellow-brick-road-the-real-story-behind-%e2%80%98the-wizard-of-oz%e2%80%99/

And it can be true that, as a satirist, all current topics of his day were grist to Baum's mill. That is the point of most satire. But these conclusions were drawn by others and are not necessary to enjoy the books now. The enduring entertainment value and moral lessons of the stories is what gives them value as literature, not what others have speculated about the author's economic opinions. And if you want to speculate about what Baum thought, nowadays the hot topic would be his racism. That's all the time or paragraphs I have to give you, H. M. Professor, TE.