There is no way in hell most roads will get alternative infrastructure for cyclists. Hence we need objective quality evidence to get the outcomes we need, regarding safe cycling on roads. We need to connect the required casualty rate reductions with what we want the pollies and bureaucrats to do, to achieve those reductions. OQE and analysis.
That doesn't mean I am advocating ignoring the cycling infrastructure necessary where roads are rendered unsafe or unavailable for cycling.
We may need to dissect each serious accident, and establish what the reason(s) for the accident was (were) in each case. Then we might say, reliably and convincingly, what the options are to reliably prevent recurrence. Both at that location and in similar ones.