Hating cyclists from carbrain perspective is always dumb but it can be reasonable from a pedestrian perspective. Those newer electric bicycles with fully vestigial pedals do go way the fuck too fast down shared pedestrian/cyclist paths in my city. It's technically already illegal for them to be on those paths but it is not enforced.

One time my partner's manager at work went on a peak boomerific tirade about how cyclists cause more emissions than cars due to the cars that pile up behind them unable to pass

Cyclists should be dicks to car-brains.