What would such an '"improved/better" fuel' be used for, where a regular lighter or matches (not banned) couldn't already be used? Add scrapings from a magnesiu

What would such an '"improved/better" fuel' be used for, where a regular lighter or matches (not banned) couldn't already be used? Add scrapings from a magnesium firestarter for a higher temperature. If there is something, why not put the fuel in a 3oz bottle instead of a lighter?