That was an interesting episode, at first I thought it was a rather let down. no good conflict, 7 music numbers, random alicornization, etc.
but i listened to the songs a bit and realized something, I don't thing the writers wrote it for some epic finale, or just to market alicorn twilight toys (though it's probably what hasbro wanted), It was more like an ending to a chapter, showing how much the girls have grown since the start, It showed how they trust each other completely even to try something they doubt themselves about if told to try. It wasn't a finale we expected, that's why people are disliking it, it was the end of a chapter, and