Just a filter that sorts by your own ratings
Filtering and sorting are 2 different things. First we filter out the movies that don't match the filters, then we order the results.
In our interface, the filters are displayed above the results, while there's a control at the bottom to set the order.
EDIT: Seems it does this by default when looking at your own ratings.
That's it. When listing rated movies, ordering by rating is possible.
There are a few other orders that are only available with some filters. For example if you use the filter "recently owned", results are ordered by own date.
QUESTION: When you tag something as "Not Interested" does it have any impact on your recommendations?
Absolutely, the movies that you're not interested in will be hidden from the recommendations and from the streaming catalogs, that's all the interest of that feature. They'll still be visible from the title search and from the person's filmography.