Well, duh. If Constitution is ammended, the new stuff can’t be “unconstitutional” because it’s literally part of the Constitution.
Besides, you’re the one nitpicking. Sure, the Supreme Court can’t change the Constitution, but their job is to interpret it. The First and Fifth Amendment don’t make any mention of technology, but the Supreme Court has ruled that those protections apply to technological speech and searches.
Your sarcastic comment is exactly my point. If Congress has the power to make something literally part of the Constitution then they literally have the power to shape the boundaries of constitutional law because they literally have the power to rewrite the Constitution. And if Congress is the only entity with that power then their power is plenary. Which is to say that the power to shape the boundaries of constitutional law is not something that is specifically and only in the hands of the Court.
Ex falso quodlibet. Congressional action is not sufficient to alter the Constitution.