What was interesting was how much of normal operations requires electricity
Yes. That neatly describes the difference between "main stream" and "grass roots" private flying. In your typical Cessna/Piper/Beech, you are very much dependent on electrical power. In a typical ultralight, total electrical failure is fairly irrelevant, most engines will continue to run, some instruments might be gone but you've learned to fly "by feel" anyway, radio may be gone but is not required anyway.
Interesting to look into some "half way between" designs, like the 600 kg LSA class - mostly beefed-up ultralights, but also more and more complex, thus more dependent on electrical power. I think the Robin DR-400 would be one "SEP" class plane in which total electrical failure would be rather bearable.