I guess, but you’ve got nothing to base your head canon on besides it being an idea you had, while I use the show’s actual canon, but whatever. I guess you’re entitled to your opinion.
You’ve got nothing, don’t you? You probably don’t like the fact that Cadence is a alicorn for some discernible reason, so you edit something to make yourself feel better.
Cadence even looks like Luna in almost every regard.
She’s an alicorn, meaning she’s part pegasus and earth pony. Get over it.