“Reasonable articulable suspicion of a crime” is all that is needed to stop someone.

I’d love to hear them articulate reasonable suspicion that your plain old mechanical bike is an ebike…

“Reasonable suspicion” would indicate that they identified a battery or motor, which they simply would not on a mechanical bike.

Either way, I think we’re arguing 2 sides of the same unconstitutional coin, and they don’t give a shit about what’s “valid” or “reasonable” anyway.