To be fair, any LLM project gets a lot of stupid tickets, by virtue of a) marketing to users who aren't really developers and b) bad developers being more likely to use LLMs. Both of these groups are more likely to write bogus or non-reproducible bug tickets, as well as feature requests that don't make any sense. My guess is 10% of those 10,000 open issues are actual bugs or sensible requests.
On the other hand, LLMs seem perfect for triage and finding duplicates, so it's still surprising that they've let it get this bad.