I don't think it does demonstrate that at all, it would demonstrate that if there was a prior court challenge were it was found to be constitutional. but there was not, this was the first court challenge, hundreds of millions of people, maybe over a billion over the last 150 years never thought to take it to federal court
one person finally did, and this decision matches what a lower court found in 2024, this is a pattern of consensus actually. the government (executive and legislative branch) is losing, while the judicial branch has complete consensus
this would actually be the worst example of anxiety about a fictionally different modern federal court, and seems more so to be an example of not knowing how they work at all
one suggestion that I've seen in other democracies is that a law passed by the legislature can be sent for constitutional review immediately by the President, instead of simple sign or veto. In the US system, all laws can be passed and it takes someone challenging it, and of the people that challenge the law they have to find a way to have "standing" - as in, prove how they were affected by the law - which is a huge risk if the law has a penalty you have to risk being affected by. That's how we have a massive nearly infinite set of laws that have never been challenged.