While I agree with a lot of what your saying.. I have had so many projects of scale planes build and fly well with electric power. Using high torque motors with big props is fun, and does make a nice sound (if not loud)
I never could make a glow motor run right..and I hated getting glow fuel on planes I had poured hours into ,making them look nice.
Also if you fly scale, the power setup can be done very cheap, and you can move the same batteries plane to plane..