Makes me wonder if an ELO-based system would work to mitigate these issues. People who merged PR successfully onto a project, that had real issues acknowledged, the quality of their responses measured by other users reactions or something, etc, multiplied possibly by the degree of importance of the project where their activity has been made. Won't be about human vs AI, but actual helpful effective being vs low effort/spammy contributions. Issues and PRs could be sorted and filtered by their ELO score. I'm saying ELO as analogy to "score based given the context", not really a 1:1 translation of the ELO system.
Negative score would be reports from other users because of spammy content or not acknowledged issues, with a middle ground of neutral score (+-0) or little positive score to issues or whatever with clear good intention, but couldn't reach a proper merged PR or were not issues (e.g. issue existed but wasn't the correct repo to be addressed, PR was good but needed other stuff to be implemented prior to it, maybe in the long run, etc)
Negative score would be reports from other users because of spammy content or not acknowledged issues, with a middle ground of neutral score (+-0) or little positive score to issues or whatever with clear good intention, but couldn't reach a proper merged PR or were not issues (e.g. issue existed but wasn't the correct repo to be addressed, PR was good but needed other stuff to be implemented prior to it, maybe in the long run, etc)