But from what I'm seeing the actual answer is that they were denied landing clearance, which is a bit suspicious.
And, to further that point, multiple airports you listed here are currently closed because of that war.
says media in Azerbaijan now as per https://report.az/en/incident/crashed-azal-plane-shot-down-b...
There you go.
My guess, they picked an airport they knew well, that they could probably navigate to with nothing more than a compass and landmarks. And if they suspected GPS jamming (personally, a dual GPS failure over Russia would be my first guess) they would be biased towards an airport far away from an active war zone.
I am curious why they didn't divert back to their departure airport at Baku. It's roughly the same distance and surely they knew that airport even better, and could just follow the coastline back. Maybe by the time they had the plane under control they were already much closer to Aktau.
https://bsky.app/profile/dandrezner.bsky.social/post/3le7jr7...
"Kill and hide. Azerbaijani officials tell local media that Russia hit flight J2-8243 with an anti-aircraft missile and then jammed electronics and _denied permission to land in three airports, steering the damaged plane into the Caspian Sea so that it would crash there and Russia’s role would never be discovered_."
I'm from the area, near Grozny. If Grozny were under fog, there are at least 10 airports nearby (Makhachkala, Vladikavkaz, Nalchik, Minvody, Rostov, Krasnodar etc) in the North Caucasus. Why would you fly east, across the Caspian Sea, toward Kazakhstan?