It certainly does matter in order to be a legitimate opinion, especially when the opinion is not in harmony with the text of our Constitution and its documented legislative intent which gives context to its text.
Nowhere in the majority opinion are the debates of the 39th Congress quoted which actually framed and helped to ratify the Fourteenth Amendment, in order to discover the meaning, to ascertain and give effect to the intent of its framers and the people who adopted it.
While the majority opinion relies upon historical references to establish marriage is a fundamental right, it blatantly ignores the the historical definition of marriage which dates back 4,000 years as being a union between one man and one woman. Hence, the majority opinion contradicts its own method used to arrive at its conclusion.
In essence, a majority on our Supreme Court set itself up as members of an unelected, omnipotent, constitutional convention, and substituted their personal feelings and predilections as being within the terms and conditions under which the Fourteenth Amendment was agreed to, while Article V is the only lawful way to alter our Constitution, and it requires consent of the States and people therein as outlined therein.