You’re absolutely correct about the current testing. I’m a private pilot & over the years I’ve seen so many changes with the FAA. For me, it’s only $150 every 2 years to be sure I’m legal.
I took some time & watched some free youtube classes for the part 107. It’s only $150 to take a 60 question, multiple choice exam. Then you never have a doubt that your videos & photos can be used for any purpose that you want.