> > To have the same experience in a ICE bike require a huge and comparably heavy motor, like the triumph speed triple or a Harley-Davidson

No it requires you to know the rpm range where the torque is on your motorbike and then be able to use the clutch and the throttle to reach it.

Slow relase of clutch + ride-by-wire system introduced in the early 00s allows for smoother acceleration compared to the past