I'm pretty tuned into gaming news, and although I haven't owned an Xbox since the 360 era I still keep an eye on gaming console hardware. I have no clue at all which Xbox is which. This naming convention is even worse than the ill-fated 'Wii-U'.
At least with the PlayStation I know the bigger number is newer and the pro version is better than the non-pro and that slim means small.
I sympathize with the moms and grandmas of the world trying to shop for the Xbox gamers in their life. It's a minefield of confusing names.