My opinion is, it is annoying and some of his reported subs are actually correct but there where hundreds of results which where not.
It is not only him who reports old scores.
It is a problem because we finally have to state in the rules that we make exceptions for old results. We have to add a deadline or it will be blurry for ever and we face those problems again when liqmet2 appears.
New users also dont know about the server crash hwbot had and lost many screenshots because of that.
Users in general also dont know about results which were already reported or not. They simply dont see subs history, why not making it appear for them?
Finally while I thinks it not okay to report scores because of missing, not mandatory information, it is when wrong information is provided.