Its because, although sometimes a delivery cyclist might be annoying, the reality is that there are almost zero KSI due to cyclist in any country worldwide.
The rules designed for SUV dont actually make sense for human-scale transport.
Their speed makes them extremely unpredictable, even if the overall kinetic energy is still relatively low, and being overtaken on a relatively narrow bike lane by a vehicle going almost twice my own speed seems dangerous as well even if there is no collision.