Earlier quoted context omitted.
Or until the doc becomes so large and slow that u can't work with it anymore (perhaps around 50 pages if there are images?)
How else would you store images if you did it on a text file? Links to your hard drive? Notice at some point you are just making a wiki. And of course now you have the added effort budget of maintaining the wiki on top of your regular work. I have seen random posts on the internet where people were migrating their notes systems to org mode or markdown. If you ask me that's too much meta work to do, in order to do you…
I migrated to org from Things some 12 years ago and since I started bare-bones (just todo entries, no special config) and grew as my needs arose, I never felt I had to invest lots of time in my setup.
Agree that some people overdo things and the tools become projects on their own though.