I do break the Inspire down and put it together every time I fly and I fly commercially with CAA certification. The extra time putting the prop locks on gives me an opportunity to check the aircraft over as I am going through my pre flight checklist (which is a requirement and mandatory for commercial flying).
I am assuming if you were going on vacation and sitting on the aircraft waiting to take off and your pilot said to himself "Oh, checking the hydraulic pressure is such a PITA lets just get airborne cos I've never had a problem before" you wouldn't be too happy?
Also, the fact you mention maneuvers causing the props to rotate backwards shows you do not understand the flight dynamics that cause the issue in the first place. It is sudden deceleration that causes the props to loosen not the 'props spinning backwards'. The reverse emf breaking force via the propulsion system developed for the Inspire means each motor can go from circa 9,000 rpm to virtually nothing in a very short time span. This puts tremendous reverse thrust on the threads holding the props onto the motor shaft and in SOME instances will loosen them. DJI specifically engineered the prop locks to prevent this eventuality and as I said in my earlier post why would you not want to add a layer of redundancy to a 3kg flying machine that potentially can kill someone if it hit them falling after losing a prop?
you misread or misunderstood, i said there is NOT ANY maneuver that will EVER make them spin backwards. If you properly tighten them in the first place they will NEVER loosen, as proven through multiple hours of flight experience. I understand your thinking on the matter and I did use them a few times when i first got them out of fear of crashing my $3500 UAV but after i realized they were completely unnecessary if you properly tighten the props I stopped using them and have never had an issue. I checked the props for tightness before every flight for the first 20-30 flights but as they were never loose ive since stopped doing so.
I leave my inspire intact and flight ready most of the time nowdays and sit it on the backseat of my F350 where it rests comfortably uncased with props and camera installed ready to fly at a moments notice. I used to break it down and put it in the factory case and then have to put it back together before every flight but i got sick of the time consuming process and having previously owned a P2 vision+ that was flight ready out of the case its a major gripe of mine about the inspires factory case(junk IMO since it only fits with no props or camera in travel mode. Maybe its just me and the older firmware but without the perfect proper flat surface entering travel mode is a crapshoot PITA that more often than not results in my inspire entering landing gear raised flight mode which causes the bottom of it to hit the floor).
Im too cheap to buy the RTF inspire pelican case for $500+ yet, and ive seen an awesome custom case mod job using a $50 husky tool box wheeled case from home depot with custom foam inserts(they cost a little extra) which i plan on utilizing in the near future but since ive had no issues for months with it on my backseat with props and camera installed ready to fly and the nearest home depot is 60 miles from me im not in a huge hurry to complete this project.
The prop locks were designed and distributed simply due to user error that caused multiple complaints to dji support and are an easy fix for stupid users, plain and simple. 100% not necessary if you properly tighten the props initially, guaranteed. If you have a phantom and an inspire youll notice the difference in resistance when tightening the props as well as the fact that the phantom comes with a tool to hold the motor while you tighten the prop and the inspire doesnt.
I dont know if this is true of all inspires as i only have one but I notice that two of the props from both sets of 4 that came with it spin on easy to full tightness and the other two have way more resistance about halfway tight which requires you hold the motor with one hand and tighten the prop correctly with your other hand. If you dont know what youre doing you would think they are tight when really they are only about halfway on and then youre gonna have prop spin off issues for sure.