A guy on an e-bike has been passing me safely for years on the biggest hill of my commute without the slightest hint of an issue as the speed differential is about 4 mph. The bike lanes, MUT, and sidewalk I use on my commute get me through areas where riding on the road isn't wise for any type of bike.
Would it really make you happy to force safe, respectful, legal cyclists like myself to ride in dangerous conditions, in pain, or give up bike commuting entirely?