Ok PBA I’ll bite.
How is it different than hatzola, The Hatzola guy doesnt carry his radio for any “specific pikuach nefesh situation”? He carries it in case he gets called (and he often/always does)
“Doctors treat shabbos like any other day.”
some do some dont.
“As the gemara says, they go to gehenom.”
the Gemara also says hamechane shem ra lechavero goes to gehinom, so we can learn bechavrusa.
Maybe the Rambam can give us shiur