Could not disagree more - for a couple of reasons.If you published a setting, you should not go and change something that is already published, except rules updates.
First, there might be some things that were written in the past that are just not...brilliant in the 21st Century. Two examples we have encountered off the top of my head would be some system names that were, umm, a bit political, and that now Droyne Sports can be female. One of those really needed changing, the other had no reason not to be changed. There was no good reason for us to be locked into past publications on those scores.
Second, and in a way this is more important, what you are proposing would result in a static setting and those have a tendency to grow stale. Again, Dune might (at time of typing) be an exception there, but this is where vibrant settings such as the MCU, Battlestar Galactica, and Star Wars live.
That is not to say that there are no sacred cows in Traveller - there absolutely are. The lack of FTL communications beyond the speed of a ship is something that will never, ever change, for example. There are other things that can (and maybe should) stand to be revisited. This way we keep Traveller fresh and relevant to new generations.
And this completely ignores how settings change when you change the medium they are being presented in - a Traveller film or video game would very likely have differences (perhaps quite large ones) compared to the RPG...