I knew about the fee, so much for personal experience.
The fact that people argue that they didn't ask for the service implies that they shouldn't have shown up ( thats the part that I quoted) , or there was no service provided (which is wrong). I don't know why you think thats not a criticism of the fire department, because it clearly is. That really shouldn't be contentious.
With respect to the how fees are charged in certain situations, I don't see how that is relevant to anything I have said, which is that user fees are common, they are common for similar services, they exist for things that you don't request or ask for, and on a list of such fees, this fire department bill is very low on the list in amount.
Lastly, I am comfortable with each indivdual paying a portion of the bill when emergency services are called (and yes, its most certainly not the entire amount). I would prefer if no amount was charged given the nature of emergency services. However, given the context of people being completely unreasonble with tax increases, I think the practice is a necessity, and in my view, similar to other necessities such as certain medical procedures, food, government administrative services, while might not be an "emergency", is "necessary" in the regular day to day understanding of the word.
P.S. Spaces between paragraphs are your friend.