To be fair, this was more like bringing attention to an existing question after it didn't get any replies on the original channel and this channel may have been more relevant. It's not copy-and-paste (which is what some people do, which is wrong); it's more like a symbolic link than a hard link. This practice might be worth discussing on #C0B8W32VA. I don't see anything wrong in linking to an existing question, if a more appropriate channel is found after posting.