Right. There was an (alleged) issue with (some) Edge units updating.Just because it's been the same for 20 years doesn't mean there isn't a better way. I connected dozens of times with the Edge and the earlier version never updated. The TIVO person I talked with said they were working on it (obviously, from this community's discussion as well as the TIVO tech's comment, there were others having the same problem). There was an issue, fortunately eventually corrected, which was preventing some Edges from updating using their historical process.
Anyway, the problem was finally worked out and the Edge updated to the current version.
That doesn't mean Edge units have a different process for updating than Roamios or that a new process is needed.
It means there was a temporary issue that was resolved.
You said, "like the Roamio, have a specific menu item to check for updates and install". They already do. It was just temporarily broken.