Almost for all. It is deemed to be the best stress-relief.
Because everything is visible from footage. Huge PIO (in Russian it is called "Goat", "Goating") on landing with very hard second touch and immediate fire. Definitely pilots are not able to land the plane without electronics, in direct mode, but they were absolutely sure they can, so did not declare emergency at all. PIC is former military transport pilot, retired lt-colonel, this is typical behaviour for Russian army. Bosses do not like soldiers, who can not execute their orders and cope with the problem by themselves! - and it regularly causes disasters.
the plane flied well until hard runway touch, so they did not declare anything, only 7600.
in the middle of 10 tonn burning kerosene puddle any material will burn and smoke, even concrete and bricks. To crawl is contrproductive, this is the best way to stay inside due to very low speed. Only when there is static smoke from relatively small fire you can crawl under it, relying on thin layer of clean air. In such an active kerosene fire there is no clean air at all.