I feel like the reason there's been a resurgance of posts rehashing this has to do with Zohran Mamdani winning a primary in the largest city in the United States. While being openly pro-palestinian AND using the Socialist word positively to boot.
If Harris had won it is highly plausible she would have endorsed Cuomo leading to Zohran's loss.
Mamdani lends credibility to some of those 3rd party/non-voting/protest voters' strategy.
I think this causes some... feelings.