It certainly looks like the making of a Joe cell ... not completely clear on the JOE cell thing .. have done quite a bit of reading on this etc.
Now I can explain the tip burning ... the this cell is not making complete pure H and O ... i had the same thing happen to me ... the fuel is contaminated with something ... more presure will certainly push the gas away from the tip to make it ride on a cushin of air ... now pure hydroxy gas will not burn the tip if it is to little presure it will just back flash.
Something that I played around with was putting gasline antifreeze in my bubbler because half the year we live in igloo's up here

this helps to slow down the burn of the hydroxy.
The way I see it for a video undeniable proof is a 2 cam shot maybe ... one over the complete area and then one on the closeup's. So many scams I am the largest sceptic in the world.
That is just my take on this ...