Former Harlem resident chiming in here as an additional, concurring datapoint.

I didn't fit the traditional Harlem demographic (ex-FAANG employee, startup founder, etc) but found the neighborhood to have solid access to the rest of Manhattan, an increasing number of amenities, proximity to Central Park, and an overall appealing character compared to the increasingly sterile areas of Manhattan

If/when I move back to NYC I would certainly consider living in Harlem again.