It can't happen unless a case is decided in a lower court and the SC grants certiorari. In the case of all three, I just don't see that happening.
I don't know why Justice Thomas would have raised this possibility.
I recall from my law school days they referred to these types of comments in legal decisions as “dicta” (ie., comments not immediately applicable to the case or issue at hand).
Although the SCOTUS can’t just simply rule on matters not before it, they can broadcast their general opinion on such matters, which can in turn inspire (deliberately) lower courts contending such issues to appeal them up the chain, at which time they can become reviewable.
I wonder if all 6 Catholic judges would vote against SSM, contraception, and sodomy.
They struck down Roe, which would seem to have been the most entrenched of all four issues, so anything is possible.
Were they to do so, these four measures would be big steps toward realigning our country with Christ.
Of course the biggest issue is the so-called “separation of church and state.” That needs to fall, and the state needs to be aligned with the Catholic Church.