Are you sure? Motorcycles already have computers, it isn't a stretch to think they could broadcast data about you. Maybe they are a decade behind cars in doing this, but I doubt it is anything else.
Bicycles don't have enough power to spare to broadcast data. (but my ebike could and I wouldn't notice the difference)
Yes. Point out the modem.
https://www.bike-parts-honda.com/honda-motorcycle/500-MOTO/R...
You are confusing what currently is for what will be. Even if there is no modem today, what makes you think they won't do one in the future?
You could argue this for any mobile product, including bicycles. There are already subsidized trackers for them. It isn't much of a distance to the future when someone is to just build them into the frame.