If you're looking to alleviate your upload-date-based YouTube playlist woes, this is the extension you're looking for--it functions intuitively, as the arrow icon is a clear indicator of which direction the playlist will advance, and the button is placed exactly where you'd expect it to be--alongside the other playlist controls.

Because the extension does not collect data, make network requests, or require any permissions, it is completely safe to use and has a negligible impact on performance.

Put simply: It's the perfect tool for the job; a must-have for any YouTube watcher. Thank you very much, developer!