Look out! Communists are coming for your toothbrush. Better vote for harsher penalties for modifying stuff you bought. The DMCA still allows throwing away or disconnecting the computer locking you out of your heated seats.

Yes, many much easier ways. A propane tank for one. Wet, high CO2 methane is really hard to make explode.

Do get a CO detector though.

You can buy gas from anyone. Even make your own in a digester.

Your gas stove is not cryptographically locked to one gas company.