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.
But that's not what's happening here, right? They're blocked on having their 'Oracle Contributer Agreement' approved; they're not even at the stage where their PRs are eligible for being ignored.
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.