Do YOU want to be in a helicopter when a drone gets sucked into its intake.
You run on the second turbine until you can land. These aren't single engine craft.
The helicopter's engine likely stalls
Helicopters don't 'stall', thats fixed wing aircraft.
the helicopter then goes into autorotation if you are lucky
This isn't optional, its the way they work, autorotation happens without any intervention from the pilot at any point when the turbine is producing less power than the energy stored in the rotors. If this did not happen, powering down the turbine would cause the aircraft to spin out of control in circles due to the torque differences. This happens in normal operations, it is in fact required just to turn the damn thing off on the ground.
landing in the fire you are trying to put out.
You don't drop flame retardant materials in the middle of the fire, you drop them on the edges or small sections, making it trivial to 'not land in the fire', though your alternative landing sites are probably effectively dangerous due to terrain ... otherwise you'd use a fire truck.
What if the drone smashes into your windshield in limited visibility, knocking the pilot out cold or worse.
The wind shields of modern aircraft are designed for heavy high speed impacts, unless you fly into a predator drone, this is unlikely to be a problem. A helicopter simply doesn't fly fast enough (and can't due to the laws of physics) to make this a serious issue.
You are very wrong here. Look at the airplane that landed in the Hudson River that was taken out by a goose. Seriously, a goose, a lot of drones are of similar weight or larger, also a lot softer.
It was taken out by multiple, in multiple engines. It flew into a flock of them. Not one, not two, but more than 4 at a minimum judging by insturmentation.
If bird strikes are a hazard, how would a drone NOT be a hazard?
They are a hazard and should be removed from the picture in emergency situations in whatever way the first responders see fit.
The problem, which you are completely ignoring because 'omg think of the children' over reactions is what happens when the first responders take out a drone for bullshit reasons, like the cops who shoot down a drone recording them breaking the law and beating someone on the side of the road?
First responders are people, nothing more. Many of them will abuse any power they're granted. Not all, but many, and if you want to avoid having those professions attract people who abuse power, you must properly constraint that power. Otherwise, people react like you, with a whole bunch of reasons to 'do the right thing' ... but all the reasons as simply wrong due to ignorance such as your own.