You must have the patience of a saint.
You must not have detected my disgust with the lack of good concise and accurate information provided by DJI.
I've flown RC for over 40 years and respect what DJI have accomplished. The controller has never crashed and by flying within my self imposed limits, the intermittent loss of video feed and camera settings is more of a nuisance than a deal breaker.
My G4 is factory clean with no SIM, no extra installed apps other than what I consider a known good version of Go 4 and those built in apps that can't be removed. I've kept the LG G4 permanently in airplane mode so it can't check for updates. I get a nag about no fly zone database update that I dismiss when I start the app. Incidentally, my original G4 always reported failure to complete the no flyzone update. I don't use maps since they add nothing to line of sight flying for photography or videography.
I am absolutely disgusted with DJI's lack of transparency. For example, the misinformation and resulting conjecture about obstacle avoidance limitations is a disservice to all operators. The Mavic can "see" a vertical 2" cable at 10 feet. At 45 degrees from vertical, the Mavic sees that same cable as 14.1' away. When the cable is horizontal, the cable appears to be infinitely far away. It is a physical limitation of the hardware implementation that DJI can't be bothered to explain. The same can be said about the information about flying over water and release notes regarding firmware and software updates.
As an RC flier, being able to turn off the GPS would be a boon in environments where one is subject to intermittent signal loss. This is enormously exacerbated when flying in proximity to magnetic disturbances and anomalies. Having some information about these issues would forewarn and forearm a reasonable user to enable them to fly safely.
Bottom line, it is possible to fly the Mavic safely but DJI makes it near impossible for the less informed public to do so. They give vague warnings about obstacle avoidance, water and flying indoors to escape liability but no reasonably accurate information to allow users to make informed decisions.
DJI have completely failed to meet my expectations for information and transparency, presumably under the guise of protecting intellectual property. Lucky for me, my accumulated experience and knowledge and a degree of serendipity and prudence have made the Mavic a reasonable selection for my somewhat circumscribed applications.