Well, unfortunately this is EXACTLY what Charles Murray has been saying for 20 years-—that the elites are inbreeding and that they concentrate in”super zips”, or zip codes dominated by certain college degrees combined with income levels. It is also true that men almost never “marry up” either financially or intellectually (some professions are exceptions if the man had prestige or glamor, such as high profile actor, politician, or academic).
There’s is a high concentration of kids with autism n the Silicon Valley and some suspect it’s because of the engineers that are married and having kids there.