The “stresstestscrubs” thing was a joke
The “fake connect” is something that people who are able to successfully connect also have in their logs ("Fake Connect" founds in Client Logs - #43 by Mmoku-tichondrius for example, there are some others on the classic wow subreddit: https://www.reddit.com/r/classicwow/comments/brxogk/fake_connects/ )
You can see in the logs others have posted, even people who have the closed beta flag on their accounts have that in their logs as well
edited to add:
the “fake connect” also pops up in this guys’ logs from… 2017…
Unless you think Blizzard was trying to prevent him from logging in too…