The whole situation with house elves, goblins and other intelligent magical creatures treated as inferior doesn’t make the story feel to good. It might even be understandable if the heroes realized the deeper problems that couldn’t be solved simply by fighting, but the protagonist ultimately just inherits a slave and becomes an enforcer for the status quo.

In retrospect it makes a lot of words about good and love and doing what’s right feel like going through the motions rather than any real values.