Reviewing https://musicbrainz.org/user/derat/edits?page=99999999:
He created his account in 2005 to add a few non-album tracks by a video game composer (1, 2, 3, 4, 5, 6). Speaking frankly, these aren’t the best edits: the first few edit notes are just “He hasn’t released any albums, as far as I can tell” without saying where the titles came from, and he inexplicably didn’t include durations for the recordings despite having the MP3s. On the positive side, he did include the artist’s website in some of the edit notes, and he followed the English capitalization rules. It looks like he tried to fix one track’s title right after entering it. I suspect that he was embarrassed when he saw that the correction wouldn’t be auto-applied, so he deleted the track, causing the rename to fail later. Yikes.
Then he took a hiatus for four years (busy with work, probably) before importing Thomas Newman’s score for The Player from FreeDB in 2009.
Still in 2009, he manually added a few online releases (1, 2). The artist’s website used Flash, so it must’ve been time-consuming to enter the track titles and durations! He apparently didn’t know that he should enter release dates, but he amusingly tracked down an archived copy of the website in 2022 and finally added release years then (1, 2). I guess he’s still learning, because he typoed one of the years in 2022 and immediately had to submit a follow-up edit to fix it. (I think that the original edit couldn’t be canceled since it was auto-applied, but then the fix went to a vote – is there some way to avoid this?)
Two weeks later, he added a demoscene artist. This edit doesn’t seem bad: he went to the trouble of adding the artist’s legal name as a disambiguation (despite there only being one artist with this name), included his birthdate, and added a few URL relationships (1, 2, 3). All of this looks like it was done so that he could add more non-album tracks that he’d downloaded (1, 2, 3, 4, 5, 6).
A few months later, he fixed a typo in a recording title and left a decent edit note. Finally, he added an artist but strangely didn’t add any of her releases until two weeks later, when he also added her legal name, (correctly?) as an alias this time instead of as a disambiguation as before.