Why did so many accepted applicants in the 2021 RD decisions thread "not send" certain scores?

I though this was against the rules which are very strictly enforced. Is there an exception to this rule that I am not aware of? Because I have some very bad scores I would very much like to not send lol

The only 2 acceptable reasons I can think of is the test was taken in middle school or the person applied EA and took later tests for other schools. Every score you receive by the time you send your score report must be reported. Don’t worry about bad scores because they superscore anyway.