In my experience, there is often not enough time or rarely the combined skill of all clinicians nearby to adequately intubate with topical in urgent/emergent conditions regardless of HFNC/BiPap/Glide.
I believe suggesting to non-anesthesiologists the elimination of NMB is threatening to patients.
Time for non-anesthesiologists (or maybe even anesthesiologists) is better spent, in my opinion, learning rescue devices and cric. I remain surprised how many anesthesiologists are under-trained in cric.