Well, trying to call someone on "speculative" reasoning, being faced with a retort, then returning with "whatever" isn't terribly constructive towards a good discussion.

However, on the subject of bike paths, I personally think anyone endangering others is being nothing but a selfish/ignorant "individual". This includes dumb roadies with their iPods on, barreling through kids on trikes at 40kph just as it does people performing the same act with 170lb scooters at 32kph. So far as open frame e-bikes is concerned, at that same speed they likely promise a similar danger, with a moderately reduced kinetic potential, although one can't generalize about stopping power/maneuverability between models, there could be cases where a scooter bike may stop better than a particular e-bike, and it could be reversed just as easily.

I don't think that people should be riding motorized vehicles down recreational bike paths/MUP's in general. Vehicular bike lanes, go for it. People ride their SUV's down those lanes anyways, it seems, but thats a different gripe.

As i've said, aside from these guys screaming along on their CF bikes, which seems to be the topic of contrast, most people on recreational paths are moving at a much lower speed, often with kids/dogs, joggers and so on.

There's no law to keep you off these paths. But if you think you're being safe, people have been killed by being slammed into by morons on 15lb paperweight bikes before. I'm waiting to see the mess one of these things makes to someone.