I don’t see any references to nazis in there. The article says “Victorian phrenology”, not “nazi phrenology”. Calling it a Victorian practice isn’t unreasonable. Technically phrenology was most popular immediately before the beginning of the Victorian era, but it’s pretty close.
The article embeds a tweet that states,"It took Nazi-era atrocities, forced sterilizations... for phrenology, eugenics, and other pseudosciences to be relegated from science’s mainstream to its fringe. It should not take mass injustice for Cheap AI to be recognised as similarly harmful."
The article doesn't directly equate phrenology with Nazis, but does make an implied connection between phrenology and Nazi craniometry, and goes on to quote a tweet which explicitly talks about Nazi atrocities being the driving force in the end of phrenology.
The entire reference feels like an overreach, however, not just because of the Reductio ad Hitlerum, but also because it begs the question on the inherent evil of any use of craniometry.