Yes, nothing mysterious here. Just wonder how much microwave energy is required? and is the FREQUENCY a special key?......
Yes, I’d assume (without any additional information) that the frequency is important.
The reason why microwave ovens heat your food is that they’re operating in the “water hole” in the electromagnetic spectrum — they’re literally causing the H2O molecule to flex the two O’s off the side of the H atom.
If I were a betting man, I’d wager that the frequency here is exciting the C-H molecular bond in the same way - you’d be able to break down hydrocarbons of every sort simply by applying enough energy to frac them. Since natural gas (ie, methane) is CH4, that’s a stable base-level hydrocarbon which results if you were able to break down a complex hydrocarbon in the presence of some excess hydrogen to fill up the carbon atom’s bonds.