Regarding your first sentence: Those instructions don't merge anything. All they do is swap the order of two accounts that someone is using multilogin with.
Regarding your second: Citation needed. There's this persistent rumor that if you make a G+ account with a fake-sounding name, Google will lock you out of your GMail and erase all your Google Docs, but as far as I've seen, those rumors have never checked out.
Regarding your second: Citation needed. There's this persistent rumor that if you make a G+ account with a fake-sounding name, Google will lock you out of your GMail and erase all your Google Docs, but as far as I've seen, those rumors have never checked out.