I read that the police were extinguishing the guy who set himself on fire yesterday only two minutes after it began. Obviously, the guy did not want to live. Putting out the fire so quickly does not ease his suffering and would only increase it if he were to live. As long as nothing else is at risk of catching fire perhaps it would be best to stay away. What do you think?
If they have some way of indicating they do not wish to be resuscitated then putting them out is the wrong thing to do.
Otherwise it is hard to say. Fast enough and a lot of the suffering is avoided. Slow and there is a guarantee of suffering and likely death. Not a call I would want to make.