The solution is that he spends more time scoping the size of the PR so that it’s reviewable and understands the code he’s submitting well enough to have discussions about it. And that he does so human to human so that they can come to mutual understanding.
AI and companies reward sociopathic behavior. When he eventually complains to his boss that his work isn't being merged and it's been done for days/weeks/months that will filter up and look bad on the people holding him up.