Initially this idea arose because I thought the ranking celebration would be more regular if done in a single thread, but when I realized that there are different goals for each user who creates their own thread, I started to believe that custom thread like this don't get much attention. I never thought that thread celebration was a bad attempt, but getting them to fall into a single thread is much better. It's fine even if you don't want to support it, I'd consider the suggestion of locking threads for lack of support.