I'll be riding my bike in a designated a bike lane (which is sometimes shared with pedestrians, dogs, etc.) with clearly marked speed limit signs of 15mph. That's plenty fast in general, but even more so in busy spots. And suddenly a near-silent e-bike will go flying past me (no "On your left," by the way) at speeds close to 30mph. Happens all of the time and is bafflingly reckless and arrogant.
The way folks ride class 3 e-bikes they really should be treated as mopeds: put them on the roads like other motorized vehicles and licensed and (hopefully) forced to obey the rules of the road. Just my opinion, but they seem to break the spirit of being in the bike lane. The touristy day-cruiser eBikes like Lime bikes are fine.
I own a Brompton, which fits through the baggage X-ray and can be checked like a stroller at the gate. I've flown with it more than 12 times, and you had better believe I've ridden it in the terminal
I only do this during late arrivals when the airport is almost empty, travel at a reasonable speed, and otherwise conduct myself like a civilized human being. On a bike. In the airport. It's great actually.