To me that's just common sense, lol. I didn't receive the screen protector either and could find no mention of it anywhere other than that pic with directions of how to apply it. I still have the factory shipping screen protector on mine except for one corner that pulled up and refused to stick again afterwards. I have a Smok G-Priv that I got on the preorder coming as well, and I purchased a universal screen protector at Walmart for .94 .
It only has one screen protector in it but by my calculations after I cut one out for my Alien there should be enough left for the G-Priv. As I mentioned in another post, I never set my Alien down a hard surface, only took it outside the house once or twice, and barely used it for the first couple of weeks because I was waiting on a silicone case that I ordered the moment I ordered the Alien. Unfortunately they only had them available out of the China warehouse.
My OCD and I are just as bad if not worse than you and yours, lol. I even went to Lowes and bought some nylon washers and some rubber ones to put under all my attys so as not to scratch my mods around the 510. They didn't work, nor did some I bought online that were meant just for that. Since none of them worked, I now take 3"x5" index cards, punch a hole with hole punch in them, place atty on the card, trace around it, then cut it out. That way I have a washer in between that is the exact size of the atty. Also, every mod I own is in a silicone case. Supposedly Smok has included one in the G-Priv and I only hope it didn't go the way of our Alien's screen protector since I can't find one even in China. Battery door? I also purposely press battery door all the way down and gently slide it closed to try and minimize the scratches that take place on the INSIDE of the door.
Nope. You seem perfectly normal to me. I think maybe you're a little too rough on your mods apparently though.