It's typical "cancel culture" nonsense. This is just another one of a million bloggers trying hard to sell their product. It shouldn't be taken as some kind of "legitimate review'.
Hyperallergic shouldn't be taken seriously, IMO. That "review" is amateur drivel.
In setting like this, you can fairly reliably bet that if the "ist" suffix is used, the writer/speaker is pedding some socio-political agenda or another, among them including "sexist", "racist", "classist", "nativist",
ad infinitum, ad nauseum.
In my view, this is caused by mental laziness. It's always easy to - by turns - either dismiss or entirely explain something in broad strokes, lacking any real nuance or understanding. Most usually, I find this done by people who are desperately want attention, approval, or a sense of their own importance. This is most easily done by shoving today's ideas onto past events. It's a particular disease of the postmodern/poststructuralist schools.
In truth, Arbus was a child of considerable wealth that protected her from the ravages of the Depression. She was schooled, mentored, and promoted by some of the most elite arts establishment of her day among which included Bernice Abbott, John Szarkowski, and Richard Avedon.
Possibly a valid criticism of her work grounded in
her time and
her work might be that she voyeuristicallly examined the lives of people on the margin from a pretty lofty perch. But even that isn't really fair because - at most - her commentary was about her world in NYC - not the world at large. She was definitely born of privilege but whether she was just slumming, virtue signalling herself, or honestly exploring her world is a worthwhile investigation, perhaps. What isn't worthwhile, is trying to make her fit into what we want her to be through our perpsective today.
Personally, I never went deep with her work, partially out of a lack of time, and moreso out of a lack of interest in the fringes she was so obsessed with. It is telling that a wealthy, advantaged, and indisputably talented artist spent most of their time with the aforementioned fringes of society and came to the conclusion that the answer was to end her own life. People here and elsewhere like to explain this entirely as "mental illness" but I think there is more to it than that. When you live in a sewer, you smell like ... well, you know what. Constant immersion in human sadness and tragedy inevitably will make you sad, mental illness notwithstanding.