Actually, anyone can download their entire [anonymized] database (or select only some sites) from Archive.org via torrent or directly:
Also because after I deleted my account all of my 2000+ answers are now attributed some user012345, not my username.
Seem they do whatever they want with the license. They just changed it from v3 to v4 of the cc by-sa with attribution required and without mine and many other's permission...