You brought up ETI. Granted, there's a lot of situations it's overused in. But there are definite times when it is needed. Should we let those people die?
If more people are dying or being harmed than would die if it wasn't available. Then yes. Those unfortunate people will die.
One gigantic flaw I see in the current "let's make EMS more educated" campaign is that, in many ways, EMS is getting simpler.
This is not a flaw.
EMS is getting simpler because many of the treatments that were thought to help are being discovered not to help.
As well, there has been a shift in the mindset of the medical community from the 80s. Death is no longer the enemy. Not everyone benefits from aggresive resuscitations.
I have spoken before on the evolution of disease. That hold true again here. Because of more advanced medical care, safety standards, etc. there is a shift towards chronic disease which need to be managed, away from acute emergency.
The purpose of advanced education is to retool EMS providers to this new reality so they have a job.
I have really given up trying to convince people. I just type this stuff to try and help those who want to be better.