All of the https://github.com/AOSC-Tracking/jdk/ links 404 for me, so it's difficult to get a sense of what was being done. Going off of the "loongson fork" links though they look rather trivial. Not saying they should be ignored, but I do think trivial PRs to large critical open source projects like JDK can often end up taking more time away from contributing engineers doing reviews and testing than they are worth.

I know first-hand the frustration of having PRs ignored and it can be quite demoralizing, so I do feel for the author. It sounds like the author is getting to a place of peace with it, and my advice from having been down that path before is to do exactly that, and find something else interesting to hack on.