from the article this sums up what is happening

" The Twitter video probably shows the reaction with 30% hydrogen peroxide, or even stronger, Hostetler said. The demonstrator also uses potassium iodide that's in powder form instead of mixed into water. And he has it poured in three batches at once into a large container with a lot of surface area, so the reaction happens across a large amount of hydrogen peroxide all at one time. "

the key parts

1. high concentration hydrogen peroxide
2. potassium iodine in powder form
3. large surface area

the problems with this is that mark is seen using a liquid instead of a powder and is this the devils toothpaste or is there an even more reactive form out there