I think the issue is that you knew there was a bug to be found in the write and checkpoint interactions, which then determined which workload you built.

My understanding is that this workload is very uncommon: the Tailscale blog says they used a custom unusual configuration to have many checkpoints like this. So without knowing the bug, it seems unlikely one would build this workload and then find the bug. If that makes sense.

Edit: just want to say that you being able to repro it is awesome, but that the overall claim seems a little overstated to me.