I made the point elsewhere, but I think that ignores "professionals in the workplace doing this alongside other things". These can easily be "pro" for content creation teams, like editorial staff for capturing Stories from events and the like.
Just because they're not replacements for high-end commercial photography equipment doesn't mean they're not being used as intended by professionals.
Completely agree that their terminology might be skewing, but I wouldn't be so dismissive of their use in a professional context, even if the users aren't "photography professionals" themselves.
Without knowing anything about the X phones, I at first assumed that XR was the top of the line X phone. XR just... sounds like a better phone.
I think they resolved this with the 11 line.
I'd imagine people getting into vlogging and such, or even people who just want to be "that cool and popular" (especially younger people) that would buy in to the "Pro" moniker.