Not entirely true. You can run a home bio digester in a sealed unit pretty cheaply. Feeding it compost and producing biogas (a mostly methane mix) at home that can be piped to appliances. Probably more upkeep than most people are up for. But if managed well, it can be a very ecological option. There are also ways this can be done at large scale with municipal organic waste.

Fairly extensive history of biogas use here: LINK