How many emergencies are people running into that they need an emergency stove, seems super edge case. I guess no electricity for days on end?
I've gone 7 days with no power, 3 days with no water, and a recommendation to boil water for a few days after, also roads in and out of the community were cut off for days, the stations had no gas, stores were mostly closed (no power), phone lines down and cell towers down, too. That was the worst I've personally experienced in 55 years in the rural NW. It was touted as the worst storm here since the Columbus Day storm in 1962.
So, not an every day occurrence, no. But I was prepared, not like some ultra prepper, just common sense stuff like generator, gas, propane, water, food, candles, emergency radio, wood stove, etc.
This is getting a little off topic, but you asked, and I think it's worth reminding people to stay prepared.
As for gas grills, I would still try to find a free one and just fix it. There's so much free stuff out there! But I like doing that, so ymmv.