I'm in the insider program, they don't/haven't come back in ages.
I just had to delete "Candy Crush Soda Saga". Was it there before I did that ridiculous registry hack to prevent it? Or did they add a new one at some point... Who knows. Its clear they don't actually want people disabling the installation of them.
Does this only happen on Windows Home?
This is also true for my recent numerous installs of Pro, which is absurd
Another fun fact is if you remove the App Installer or whatever it is called, you can't remove the "adware" apps