Like the greater majority of experienced FS users, I value control over the FS environment, both inside the sim AND under its bonnet, so to speak.
Zip files are always the best for me. In fact, on average when I find an auto-installing .EXE file I always make so it spills its guts inside a temporary folder for me to then manually move the parts were they should.

No offense of any kind is meant to those who take their time to build the auto-installing files, of course. They do it to make the life of unexperienced simmer better, but everyone is entitled to his or her own preferences, and mine lean towards the use of Zip files. That's all folks

There is no such a thing as overkill. Only unworthy targets.