People dont hate Alicorn Sparkle because she has wings. They hate hamfisted changes from greedy corporations.
What a slap in the face to the audience, young or old, male or female. Its downright disrespectful to take the most beloved character and turn her into a joke. Theres really no development that can be done that wont turn out exactly like Cadences forced introduction and sudden plot relevance while Luna and Celestia still dont have devoted episodes or development or importance.