y would you use it in a molotov? isnt the point of those to just light the rag on top, thus making a fuse pointless?

back to the real topic...do non gunpowder fuses work for making shit explode? like if i were to take a line of napalm and light one end of it would it work? and for the traditional method, would like fireworks powder work for a fuse? i mean could i put a bunch of powder from those shitty fountains into a dixie cup, put a shoelace and water in it, drain the water and let it evaporate the rest, would that work? sorry if that wasnt clear.