I find it striking that you don't include matches, either the conventional wood matches or the "fire starter on steroids" emergency type. My experience in dicey situations where lighting a fire was critical is that matches work very well. They should be carried in a good watertight match safe and should be paired with suitable fire starter/tinder material - you are setting up for the worst of conditions, not the best.

I do carry a peanut lighter on my EDC key chain and it seems reliable. I test it every now and then and refresh the fluid occasionally. I haven't had to use it in a case where all the chips were down.

If I am out in the woods I generally have my key chain lighter, the dedicated lighter in my cook stove arrangement, plus at least a match safe in my "10 essentials" bag. The need for fire merits the redundancy and the relatively trivial weight increase.

I have found it worthwhile, either before a significant outing or on a regular basis, to check your fire making gadgets and insure that everything is working.