I've looked into those natural gas generators too but yeah can't quite justify it. For fridge/freezer, if things got really bad I would just make ice outside and bring it in, or start moving food outside.
For a while every time it was windy we got a power outage on my block since trees would touch the HV line that runs behind my house, but the crews would usually have it back up within 1-2 hours so the UPS made more sense. They've been keeping the trees trimmed now so it happens less often.
i struggled with a cheap gasoline one for like 15 years, fuck it. I am hank hill about that. One fuel for grill, heat and electricity. Does not spoil. Does not smell. Actually works. And you CAN put gasoline in it if you want to, so long you clean it after (hopefully it will never come to this).
I do wonder if it would have a problem in a really cold weather environment, but its usually summer rain storms here
Also the factor of draining fuel (usually wait for it to cool some what) is annoying as hell. This you can put away and forget about immediately after 2 couplings and 1 valve.
BTW you can get a kit to refurbish generators to run on propane, i.e. the tiny honda generators. That might be very interesting for you. Those little hondas are really cool, but I don't own one, rather have everything work then play circuit breaker management etc. You can probably do it with a cheap garbage one too.
Notes about video to do a better job:
1) add a bracket for the zip tie, don't tie two hoses together, its really ghetto
2) use a torque wrench (its fire)
3) do apply the loctite and see if you can extend the threads, I don't like it for high vibration, read about how to use threadlocker and clean before using it as recommended. Careful with temperature there, you might need a high temp threadlocker, and you need to make sure there is no plastic contact because metal threadlocker does not like plastic, and plastic safe threadlocker is gummy and probobly sucks with temperature. consider using a lockwire, castle nut, etc
4) lose the quick connect, lazy BS, use a gas rated brass fitting (like on a welder)
5) strain relief on the hose might be a good idea (bracket + rubber)
6) don't use the thin plastic cover to mount the top fitting, add a bracket to a heavy structural element