One particular type of alcohol stove is probably an order of magnitude more risky than any other type of stove, the super easy to make cat can stove, particularly the Jim Woods type, where the pot rests on the stove, which is already very narrow, creating a fairly radically unstable setup, with the alcohol totally uncontained should the top heavy pot/stove setup be knocked over.
I'd agree there are some risks with all stoves, but this one stands alone, and sadly, that stove just happens to be the easiest one to make, and has the fuel super easy to spill out.
Stoves with a stand are far less likely to get knocked over, and a stove like a whisperlight, where the entire unit creates a fairly large footprint has to be at least 10 times harder to knock over than a smaller and radically lighter aluminum can stove of any type.
Sure you can blow up the bigger stoves, but in normal operations this almost never happens, whereas s simple misstep or trip can knock over the light alcohol stoves.
It's also a fact that alcohol when burning in the light is hard to see, which is another factor.
I know when I prime my alcohol stove, I use a little primer tray that rests on the ground, but reading this thread, I am inclined to start using a small aluminum reflector as well to cover the ground.
As you are probably aware, when a pattern of fires starts, and if the park service starts to notice that alcohol stoves were involved, they are not going to differentiate between types or skill levels of users, they are going to ban them, since most users are clueless, that is the right decision, as with bear cannisters.
So this type of discussion worries me a bit, especially the comments that full contained stoves that are virtually impossible to tip over are just as risky as an alcohol stove which weighs a few grams and has no triangulation on the legs at all to stabilize it.
Glad I use a stove with a pot stand, I like these things but I think it's wise to consider the actual risks, especially in very dry terrain cooking during daylight hours.
I used a whisperlite and xgk for decades, and consider my new alcohol stove much more of a fire hazard, with equal care taken with bot to avoid preventable errors, so I try to be very careful with it. But we all know that there are some people who will not be careful.