Different version different translation, some people just had that urge the need to collect every different version even though they largely the same
Scanlations are amateur translations and can vary in quality/accuracy so official translations might be more reliable to the source material. It’s pretty bad to post official translations on mangago though because it means the manga has been serialized so we’re not only ripping off the author but also all the people who worked on publishing the manga overseas.
Its not just here people posted the official version practically everywhere, mango is not an exception
Again this wasnt even scanlation, there were already 2 scanlation version before then we had the futekiya version which now is dead and the recently upload the uploader uploaded the yen press version
Why do we need two official versions???