I have a plug-in electric leaf blower, and it is very loud. Enough that I'm self conscious about using it, unless there is other noise around to drown it out.
All power tools are noisy, but the gasoline operated tools designed for mowing lawns and blowing leaves are an affront to humanity and nature, not only because of noise and smell, but because they are designed to do an incomprehensibly counterproductive task for the sake of owners misguided sense of ego and 'curb appeal'.
Cue the torrent of entitled comments explaining to me that they like their freshly cut lawns (not by them of course, but by minimum wage landscapers) and consider it their fundamental human right.