Nonsense. It was obviously a stupid bug, not remotely deliberate. It's the whiners who are doing the disservice with such hype. This one was fixed before you posted - even the other LL thread had already died a death!
It doesn't matter that it was "fixed" before the user posted. Many of the people won't notice the data loss for days or weeks to come; they'll have some bizarre side effects ("hey, my backups haven't run for a week!" or hey, "Spotlight doesn't work", or basically data from ANY FOLDER that happened to be storing data in the root folder for whatever reason).
If you're curious as to why BackBlaze has its folder, their CTO explained it here:
https://www.reddit.com/r/apple/comments/45jtqw/warning_bug_in_adobe_creative_cloud_deletes_mac/czyq705Indeed it's not a best practice for an application to store stuff at the root of the disk. However, even without 3rd part applications, there are things that store data there, for example on my system:
trebor:/ user$ ls -al
total 77
drwxr-xr-x 31 root wheel 1122 Feb 13 17:06 .
drwxr-xr-x 31 root wheel 1122 Feb 13 17:06 ..
-rw-rw-r-- 1 root admin 12292 Feb 4 16:27 .DS_Store
d--x--x--x 9 root wheel 306 Feb 13 17:08 .DocumentRevisions-V100
drwxr-xr-x 2 root wheel 68 Oct 9 2014 .PKInstallSandboxManager
drwx------ 5 root wheel 170 Oct 9 2014 .Spotlight-V100
d-wx-wx-wt 2 root wheel 68 Apr 8 2015 .Trashes
drwxrwxrwx 4 root wheel 136 Oct 27 2014 .bzvol
---------- 1 root admin 0 Jan 30 16:38 .file
drwx------ 2019 root wheel 68646 Feb 17 10:52 .fseventsd
drwxr-xr-x@ 2 root wheel 68 Nov 18 15:15 .vol
Just whacking one of those folders could be bad, depending on what's in it. And because people are bad with cause-and-effect in general, especially when separated by days or weeks, they're going to be confused and blaming non-Adobe companies for weeks, despite the fixing of this "bug." This issue is not over for users.