Paint has been available in aerosol cans for many years, but Rust-oleum just had to reinvent the nozzle, when the type you used before was perfectly alright. The reason seems to be so that you can spray at any angle, but I can't believe that anyone would use this type of paint for large immovable objects where spraying upside-down becomes essential.
The claim that the "Unique drip guard prevents paint on finger" is completely false, this nozzle dribbles so much that paint (lots of it !) will certainly get onto your trigger finger. Even if you can put up with that, the huge blobs that get spattered onto the workpiece will be the last straw, because you spent the money on an aerosol to get a great finish, and that's not what you get.
I also used a primer from the Rust-oleum range. That "conventional" nozzle works just fine. But the flashy "high-tech" nozzle on this can is just too clever by half.