I would see why they would, but just like Twilight, Celestia, Luna, and Cadence all became alicorns (C&L out of mostly headcanons, for this proves nothing, as there has never been stated to be another way), and were not born alicorns.

I still find it kind of strange that only ONE artist I've seen so far actually remembered she was a pegasus, or has actually read the book in which it was stated in.









Yeah, but still... Somepony's gotta at least know, I mean, really, do people just assume alicorns are BORN alicorns?