It is a perfect "time capsule" version—stable enough to be high quality, but historically significant enough to be unique.
2011 is when Minecraft left beta (1.0.0 released November 18, 2011). But a 2022 repack would not be limited to 2011 content. The “2011” in the filename might be misleading or a naming convention error. minecraft 2011 1191 27072022 elamigos high quality