No generator indoors, or near doors and windows--------agree
No candles indoors------------------disagree, safe IMHO WITH CARE.
No camping stove indoors-------depends on the fuel IMHO, Coleman Fuel or gasoline not safe IMO, but kerosene or LPG acceptable with care.
No charcoal indoors------burning it indoors, no way, storage is fine.
No fire indoors-----no IMPROVISED fire, agree, but a properly installed stove or fire place should be fine.

And I would add, avoid "suicide leads" for generators, they are so called for a good reason.