I think Romy explained it best.
I dont' know about other people... but for me, in the situations where I am unconscious and need a dog to be A OK with paramedics/strangers/etc.. manhandling me and coming around
a molosser breed would be generally unsuitable.
Imagine Pans' reaction if you were unconscious/seemingly in distress (sometimes I flail around, cry, whine) and then total strangers started coming up to you, picking you up, checking a pulse, yelling things, lifting you, moving you which, while helping you, is causing you to react MORE in distress like they are hurting you...
I imagine he wouldn't be too happy about it.
Besides going against everything they are bred to do is one thing, but also the fact that paramedics and people might :yikes: at one and be scared to approach.
Even sweet fluffy Merlin has had moments, even with training, where he has needed to be contained because I was confused and pushing paramedics away and yelling "NO STOP IT"
luckily for them (unlike with many big breeds), Merlin is easily contained and convinced that it's ok. I can't imagine one paramedic/bystander holding back Pan (or even volunteering to try) if he really wanted to get to you.
There are a few that are well suited and perhaps different kinds of handlers, I don't assume to know every dog that every person needs.
but for me?
never.