This question got deleted 4 hours only after it was put on hold. Why (Roomba or human decision?)? I find it a bit fast as it doesn't give other people a chance to express their opinions.
As you can see, this was deleted by the Community ♦ User. This occurred because it was deemed a
dead question by SE-wide policy. This process applies when a question is more than 30 days old and ...
- has −1 or lower score,
- has no answers, and
- is not locked.
To my understanding*, it actually had nothing to do with the fact that it was put on hold, nor did it have anything to do with a “quick” decision by a moderator or anyone else. It was part of a scheduled, automated process that occurred when the question turned 30 days old. Please see this explanation of the process and the reasoning behind it on Meta.SE if you would like further information.
*Anyone should feel free to correct me if I’m wrong about this.