Indeed, I've never seen auto-lock bots on bug trackers before: this is terrible. I am fine with auto-close because they can indicate reality if they are closed

Indeed, I've never seen auto-lock bots on bug trackers before: this is terrible. I am fine with auto-close because they can indicate reality if they are closed with a WONTFIX status: nobody will work on fixing this. As opposed to eg OBSOLETE status which is not necessarily reality. If there is no explicit comment indicating how the project doesn't even want this, it is still an invitation for someone else to solve it themselves (for a free software project).