If you’re a real fan you’d know that the friendship is magic series explained that when the 3 pony breeds are separated by hate, then their respective towns and cities would be plagued with an eternal winter surrounded by windigos. Remember? Like they literally made that holiday special theatre typa thing in an episode. Plus princess Celestial and Luna are already hundreds of years old, how is it possible that they just randomly disappear in the future? They made them seem like they were immortal. Additionally, if both original princesses are gone, how did the sun and moon rise and fall? When they both lost their magic in the gen 4 series, twilight had to do it herself since she held their magic. So many things just don’t add up. They also never explained how the 3 types of ponies split up in the first place. Also, if unicorns can’t use magic, how did they get their cutie marks? A unicorn is supposed to be limited by the type of magic they can do based on what makes them special. Like for example rarity got her cutie mark when her horn dragged her to that rock that has all those crystals in it. With magic. Twilight got her cutie mark with the help of magic too. So how exactly did unicorns get their cutie marks without having the magic to do so? Also that was way too easy for sunny to become an alicorn, twilight literally went through seasons of struggle to be REWARDED that privilege (again with the help of celestia). They should have kept the already set in stone rules and limitations of the universe in mind when writing the script. At least make every town plagued with the winter and windigos, at least.