It's okay. If you need an extension to reverse the chronological order of playlists, this works fine, but there are REALLY stupid flaws. For example, the chronological options are REVERSED: sorting by "newest to oldest" actually gives you "oldest to newest" and vice versa.

while it does reorder very neatly, afterwards the videos don't autoplay for me. I don't know if it's something on my end or (un)intended behaviour that's simply a part of it