Here's the thing, there is more to a notch than simple material removal. If the edge of the notch is a sharp square edge then that is a crack initiator and there doesn't even need for there to be material loss for a fatigue crack to propagate.
Anyway the advice on here is mostly to help the affected owners. Those owners can choose whatever course of action they desire. For me there is no way I would be riding a bike for a notched steerer but it isn't my bike. No need for any sniping or calling for threads to be closed, users to be banned unless it is that @Tubbsy troublemaker stealing icecream again.
Anyway the advice on here is mostly to help the affected owners. Those owners can choose whatever course of action they desire. For me there is no way I would be riding a bike for a notched steerer but it isn't my bike. No need for any sniping or calling for threads to be closed, users to be banned unless it is that @Tubbsy troublemaker stealing icecream again.