I vote NO because, How LAZY do you have to be to not put a file in it's proper folder yourself? I mean, it's not hard to figure out that addons go in the Addons folder in your OFP directory. It's not like the folder's are all called x5d5d359r318 or something and you have to figure it out by isolating "x".
Also, I just don't trust exe's. but I'm kinda paranoid about viruses, because I play OFP on my brother's computer.
Usually you have to locate your OFP addon folder anyway for the installation program to work. And then all the install does is pop a .PBO in your addon folder, which I could do in less time from a zip than with an installer.
Exe's only make sense for large mods, IF the files go in different folders (addons, missions, worlds...)
IMO, of course.