Well, like I said, it has to wait for a network connection to be made, and then it's connecting to a site to download and apply a wallpaper. Also, are you sure those are the only things that run at startup? Have you tried looking at your startup entries with CCleaner?
Once again I fell down the martial arts rabbit hole and am plumbing the murky depths of the internet's various martial arts and fighting crafts echo chambers.
If you're not actively involved and only get up to speed every few years or so, you can see the tide of public opinion flapping worse than my dong while I'm skipping naked down a hallway.