Were the World Fair Photos of Models?

I put some ideas on a thesis that several of the images that appear of the early world fairs might be of giant dioramas or models. I link to various research for you to consider. Not saying it is true, but the are enough oddities with this to make one examine this question.
https://howdiemickoski.podia.com/blog-fairmodel

Another blog post discussed the strange Lay's groundhog day commercial from February 2.

You can also go to my locals channel where there have been many videos posted over the last month.
https://howdiemickoski.locals.com/

Wishing you well as 2024 continues.
Cheers