Unless full recovery with no to minimal deficits is likely, not so much.
“You should put your wishes in an advanced directive so you don’t suffer in the ICU in ~hopeless situations” (true) and “there are a non-negligible number of cases where the suffering in the ICU is not worth the modest life extension according the patient’s own values” (also true) and “the balance between life extension and quality of life errs, on average, too much toward the former” (plausibly true) are nothing like “the ICU is worse than death for most people”.
It does not surprise me that many would choose to just die ASAP if something bad happened to them.
If you understand French here is a video of how the procedure is done. https://youtu.be/bX5yZFM2Dn4?si=h0hod5XXgWCWrfLa
SAMU's program is impressive and shows a lot of promise as a bridge treatment, and it's completely unlike anything available here in the US today (where myself and the friend I mentioned earlier live).