Another 5-4 decision, and yet another day with Roberts dissenting with the liberals. Bush dropped the ball nominating him, but that's another discussion.
I would point to Neil Gorsuch's opinion which hits the nail on the head:
https://www.supremecourt.gov/opinions/20pdf/20a87_4g15.pdfAs almost everyone on the Court today recognizes, squaring the Governor’s edicts with our traditional First Amendment rules is no easy task. People may gather inside for extended periods in bus stations and airports, in laundromats and banks, in hardware stores and liquor shops. No apparent reason exists why people may not gather, subject to identical restrictions, in churches or synagogues, especially when religious institutions have made plain that theystand ready, able, and willing to follow all the safety precautions required of “essential” businesses and perhaps more besides. The only explanation for treating religious places differently seems to be a judgment that what happens there just isn’t as “essential” as what happens in secular spaces. Indeed, the Governor is remarkably frank about this: In his judgment laundry and liquor, travel and tools, are all “essential” while traditional religious exercisesare not. That is exactly the kind of discrimination the First Amendment forbids
Cuomo was unfairly targeting places of worship, especially within context of BLM rioters/protests which went on unchecked. Good on the conservatives and ACB on this decision.