I'd also suspect that someone who rides a bike for their job is likely likely than the average person to die in a crash. People that die in bike accidents are disproportionately not doing two things:
1. Wearing helmets
2. Being sober (20+% of adult cyclists that get killed are too drunk to legally drive a car [1], and "drunk cyclist sober/car driver" is actually a lot more common in fatal crashes than "drunk driver/sober cyclist" [2])
I don't want to victim blame, but there's relatively easy things you can do that drastically reduce your risk of dying on a bike.
There's also some intangibles, like someone who rides all the time is going to be more familiar with safer routes (OTOH they may be encouraged to ride more recklessly to maximize profits?). Even with a pedal assist bike, I'd also imagine that the health benefits would partially offset that micromort.
[1]: https://www.iihs.org/topics/fatality-statistics/detail/bicyc...
[2]: https://crashstats.nhtsa.dot.gov/Api/Public/ViewPublication/...