I'm all for more bicycles being out there. Even the ones that have some power beyond mere crankset power.

Just so long as passing speeds are reasonable, and so long as folks don't put others in danger. At which point, I fully expect such folks to be just as accountable as anyone else putting others at risk with close and/or overly-fast operation for the conditions.

Good step. At some point, it was bound to happen, simply given the trends in bike sales.