I had reread the article you linked and noticed this part:
I double checked what mine was set to and found it as 524,288. Then I realized instead of mapping just the movies, tv shows, etc. folders to the container I had mapped a more top level directory… The total for that came out to 1,100,130 directories… Even though they aren’t all mapped within Plex would they still count towards the watches? Currently in the process of just mapping the subfolders I need and remapping my libraries to those paths instead… Seems rescanning is going to take a while since everything is at a new path in Plex’s eyes.