That’s kind of my take. Too many people want to paint SCOTUS as a single (and usually corrupt) entity but there’s a much wider diversity of opinions expressed across SCOTUS which often gets left out when we talk about their rulings. A complete lack of dissent from all justices signals that there is indeed some rationale here beyond partisan politics. Given the importance of the matter and the many many consequences of any given ruling on it, it makes sense to me that they would hold off and let the appellate courts chew on it for a while. By holding off they are allowing a wider array of judge’s opinions to be heard which can only enrich the arguments they’ll hear when and if they do ultimately take the case.