So, while I do respect this person’s right to disappear, if they’re a real person — I’m also immediately concerned about whether this was even a legitimate tool in the first place.
A quick dig around in the source doesn't yield anything that's obviously suspicious to me; and both versions visible on the AMO match the contents of the respective git tags. o I'm closing this out believing that, yes, this person really did just opt to remove themselves from the Internet; and this really was just a project that died when they left.