Yeah sure, that's what I do. And I would never think of leaving an AFB fire pit uncovered. In fact it never takes me less than 4 hours to do an AFB burn because I spend the time turning everything over, until every last scrap is 100% vaporised.
Perhaps the difference between you and I is that when burning a hive with more than 100 kilos of honey in it, I am not going to pretend that at least some of that honey does not soak into the dirt.
Accepting that reality means it is factored in and precautions taken. IE it gets buried deep, and robbing at one of my AFB burns simply does not happen.
Burning in a drum? No. Recipe for disaster, not to mention illegal. Any honey that does escape ends up on the surface ready to be scooped up by the first bee to come along. I have seen a burn being done in a drum, with molten honey and wax running out the bottom, straight onto the dirt. It's also harder and more work, than burning in a hole.