Most cringe episodes are the first and last two of the season, but the slice of life in the middle are more often than not golden.
But yeah, creating a curated library and not leaving it to chance would probably be a good idea.
And MLP is indeed a quite good show, fans ranging from Miley Cyrus to Gabe Newell.
Also I don't know how is it considered bad if characters are lovable (MLP has 50+ different, but lovable characters by design), or that if objects around her (clothes, mugs, toys, other merch) make her feel good?
Some, like Transformers, were essentially toys that were given shows.
Even Sesame Street, a PBS (public broadcast) show, still has significant toy tie-ins -- anyone remember the Tickle Me Elmo crazy years ago? My 2 year old has a big-ass plush Cookie Monster.