UpdateInTerminal is deprecated for a few reasons. Mainly because there are good “alternatives” for it, like pacman and yay.
Also, there’s also eos-update which is capable of checking the mentioned Nvidia thingy, among other additional features like the keyrings.
But UpdateInTerminal is still used by eos-update-notifier, so it will take some time to handle those two apps in a reasonable way.
The plan is to eventually remove UpdateInTerminal, then think about what to do with eos-update-notifier (which may be “minimized” in the future, but that hasn’t been really decided yet).