The return seems pretty accurate, at least the “why”. Not knowing much about the details about your yard or irrigation system, it is impossible to validate the recommendations though.
Default settings are exactly that, default. Gotta start somewhere, but it’s almost never accurate to a persons particular yard or irrigation system, which is where Flex can fail. Garbage in, garbage out. You need to invest a bit of time understanding your yard and irrigation system to dial in the settings specific to your yard.
As for the ChatGPT recommendations…give them a try. The only setting that I usually don’t mess with is the Allowed Depletion. I’ve always left at the standard 50%, but it is easy to change if it isn’t working. Setting it to 35% is just going to make the system run a fair bit more frequently.