Were the brilliant lights we saw during our plane flight nearing Los Angeles, due to reflected sunlight from a solar farm in the desert below, or something else?

This, indeed, was not a solar farm but the famous fireball unidentified aerial phenomena many have described. They were not on the ground but hovering at a low altitude and, from your perspective, it looked as though they were ground-based. You were in the best position to see there was actual movement of the objects, as they moved together and then separated and thereafter held relatively steady. Given there were some atmospheric sources of alteration and blurring of the images at times, particularly with some clouds intervening, there were opportunities for misinterpretation as well in what was taking place. But, as you have seen, people will be quick to dismiss them as a prosaic object, like a solar farm, simply reflecting the glint of the sun, and perhaps the newer technologies to intensify and concentrate solar energy with multiple mirrors to focus them on a central collector. Those, indeed, can create a large source of illumination that would be quite impressive viewed from an overflight, but nothing truly like you have seen. What you were viewing was extraterrestrial craft putting on a show, as they are doing more and more and more in service to the Disclosure Movement, to get people scratching their heads wondering, considering possibilities there might be an alien presence after all. To the extent they see it with their own eyes but nothing horrible happens, a city is not attacked summarily or a plane downed from the skies, and so forth, such sightings serve to soften up the public and add to complacency, and that will serve the Disclosure Movement. So the revelation of the extraterrestrial infiltration will be seen as a coming savior and not a menace because you will be told, they are here to save you from evil extraterrestrials, and that is, unfortunately, the opposite of the truth, they are all evil and working to destroy you. Their deception, if society believes them and accepts their offer of help, will seal your fate because you will be lining up with them and not with the divine realm. We are the only ones who can save you; if you embrace your enemy, they will destroy you and we must let that happen if it is a human choice—that is the power you hold, and not us, with the current arrangement.