If I follow the instructions here to play on my own with a bunch of bots, will this affect my stats?
Will kills, deaths, headshots, etc, be added to my numbers like normal?
Nope. After half an hour of bot killing, my kill count had not increased from 0.
Also confirmed by a dev:
However: after a second game, my kills were still at 0, but my deaths, captures, and teamwork had increased. My experience had increased by 19, but that appears to be buggy, so I'm not sure if it came from the bots or not, or if I even actually earned it.
It also appears that bots will count towards achievements.