I don’t think it would be a federal concern, but a state one.
However, in this case it’s because NYC law is typically allowed under NY state law to be stronger (but not weaker) than any corresponding state law.
NY law already requires easy cancellation https://www.nysenate.gov/legislation/laws/GBS/527-A?utm_sour...
NY law already requires easy cancellation https://www.nysenate.gov/legislation/laws/GBS/527-A?utm_sour...