Comment by makeitdouble

I'd look at it from the lens of the situation near the door changing in unexpected ways.

Like turning the thumblock, moving the bench, shoving other people's shoes in the way etc. There is a myriad of things the patient's family can do that result in 30s delays. Sure removing one specific potential cause could have value, but it might not be worth it considering the downsides (someone will have to deal with the mess, sometimes the lone elderly who's already in pain but not 30s from death either)

I think too many people are focusing on the "emergency" part, when most of the interventions aren't about shoving off every second. Other commentators picked up on the ambulances rolling into intersections at a snail's pace while blasting their sirens full volume, because they care a lot more about secundary harm than reaching the hospital 10s earlier.