Personally, I’ve never flown much over 120 miles out BVLOS but that was done with highly sophisticated military grade equipment tested over closed ranges for hundreds of flight hours spanning a wide range of conditions before they were released for use in a non testing environment. Even with all that there were instances where GPS and/or communications were lost and pre programmed return to home flight plans failed to deliver. That’s exactly how Iran got their hands on several of our UAV designs and partially why our little drones were suddenly able to do as much as they do.
If there’s anyone out there that believes our little drones are anywhere close to matching the reliability of military drones they need to smack their Mama’s up side the head for giving birth to such a stupid person and allowing it to survive. What you are flying is high risk, subject to very simple jamming, and is made with zero equipment certification standards. You have nothing to assure you it won’t fall out of the sky or void the C2 link to go anywhere it could end up. That covers pretty much every drone available that isn’t produced under a military application design standard, standards that were created to assure safety and reliability.
If the only risk posed was to the person operating the aircraft, BLOS ops would be no big deal but that’s not the case at all. Persons and property on the ground, and people flying in our airspace are put at risk, not to mention losing the ability to fly RC at all because some self centered, narcissistic fool caused an incident (not an accident as the flight would be intentional) that provided the impetus for new legislation banning the use of unmanned aerial vehicles by the general public. Having the ability to do something carries the responsibility to understand and recognize when and where that something would be safe to do. The video at the start of this thread clearly demonstrates the operator falls woefully short in that. You may think you have a right to test your equipment, which although doubtful might be true but you have no right to place persons and property belonging to others at risk.
With commonly available drones I’ve flown out a little over a mile, just once, in an area where no other people, cell phones, or WiFi could be present. That was with an H using a stock, two antenna ST-16. But that was only done once, with every flight before and after performed LOS at distances of 2200’ or less. Only larger drones have been flown further out than 1,800’ because with only 20/15 vision I could not see smaller ones like the H well enough to control them.