I don't think that is a (very realistic) concern. AI is slop, the problem is not that the real contributors are struggling to get PRs merged.
The bigger issue being, raising the bar to students who may have otherwise had productive careers (but education is a general issue, where the students don't even yet recognize they are being scammed).
The bigger issue being, raising the bar to students who may have otherwise had productive careers (but education is a general issue, where the students don't even yet recognize they are being scammed).