Is Firebase required to configure Google Analytics for mobile? Previously, when I set up Google Analytics for mobile, I selected "Mobile" in the "Create a new property" view and got a standard Google Analytics key (for example, "UA-BLAHBLAH-BL"). However, when I went today to set up a new property, this is not what happens. Instead, I see this:

It seems that now there is no way to use the traditional Google Analytics SDK for new properties using the olde analytics key.
Am I right in this conclusion? Or is there some other way to set up a new Mobile property with an analytic key of the past that I missed?