Well, just from today, I had to have two trucks just to haul debris away from a job site (which we were both fuller that I'd like). Also something to consider, is that a lot of our work trucks double as snow plows in the winter, which is something a van absolutely can't do.
I am a landscaper and would absolutely not be able to do my job without a large truck. I agree that for most cases a truck is not needed, but some jobs simply require their use.
Probably a lot of lint in there! My 4 year old phone gets that way until I clean it out with a plastic pick (very vigorously at that) and it's like new again.
A buff works pretty well instead of a balaclava and can serve the same purpose and more. Essentially just a tube of stretchy fabric that you can wear around your neck and pull up into a close enough approximation of a balaclava.