Regret on a $10k desktop rendered obsolete for purpose (the 512GB of RAM only has so many applications) months later is not a great look. It's good long-term brand value thinking to close the regrets window earlier.
Definitely “Caution” stage: https://www.macrumors.com/roundup/mac-studio/
Perhaps not? Think of all the Chrome tabs you could keep open at one time!
“Rendered obsolete” is a doing a lot here. It might have been discontinued, but it is still faster than the rest of the line and the only self-contained computer that can handle models that large.
The most I would say is that it was discontinued, but, depending on how it goes, it might be just sold out for now pending on memory procurement.