With such old bugs I often wonder whether it's not best to simply close them. Few people will browse them and many will be "accidentally" closed by reworking of different subsystems. But if they are still relevant somebody will file it, again. If not reopened it's probably not a problem anymore.
Bug Wars II: CADT Strikes Back. ;-)
A bug report is documentation. It is valuable. It's a gift. If written well enough of course.
If you feel open bug reports clutters your bug tracker, first I would suggest you are watching them from the wrong perspective, and second I would suggest you might need to take advantage of some triage / organization tool (better) like labels or projects.
Open issue doesn't mean "planned" or "will look into this".
Saying this as a software developer. Who has also been reporting some number of issues. Reporting takes time.