Who cares if he pokes it in lava and (maybe) ruins the temper?
Funny, that's what I said when I saw the original post. "And we care because?"
But, if you share something that you want people to look at, then you cant expect people not to comment. Heck, at least spine whacking some people find a worthwhile test.
Have no idea what dunking a knife in lava is supposed to prove...maybe you might need to do that in a survival situation?