Still following the post above check below a link for a paper published in Higher Education Quarterly: "institutional inbreeding has been approached as a negative and problematic institutional practice. From an ethical perspective, it has been linked with nepotism or in-group favouritism...a practice that can ‘ultimately place the university's legitimacy and social utility in jeopardy’ https://onlinelibrary.wiley.com/doi/full/10.1111/hequ.12302
PS - If the inbreeding of European Royal families led to the freakish Habsburg jaw then to what aberration will academic inbreeding lead to ?