In other words, bicycling is pedaling... But, then along comes...

Pedaling 70% and having 30% assistance max 350 watts, is till bicycling with an E-Assist, IMO... But, then along comes...

E-Bikes that you don't actually need to pedal with crank rotational sensors, with 750 watts...

E-Bikes with throttle, again you don't actually need to pedal at all, 750 watts... I am pro E-Bikes... but,
for some/most people things seem to change at certain points.

For some it changes at, as soon as a motor is added.

For me it changes when pedaling is not actually required,

For others still it changes when the law says they are no longer riding a bicycle at over 750 watts and a throttle...