I like the new menu, I don't mind the organisation of things, but the lack of priority to opening things as a normal tab is frustrating. As far as the developers are concerned, it was only a Nightly feature and not very many people used it, so no need to ensure it's available presently. That said, I'm not sure that's a criticism of the new menu, which I reiterate, overall is massively positive and makes Firefox feel a lot more modern and a better fit for modern Android.
You can follow along with the progress of open in regular tab here: https://bugzilla.mozilla.org/show_bug.cgi?id=1923716