Well, finally took the time to peek under the hood, and without going into the details, here's one solution.
When clicking "all videos" it will direct you to:
So to view the videos in reverse order, you need to append a parameter:
Looks like the player will also move forward in a chronological order (or, more likely, by date added) but I'm 100% if this works as I hoped.
I will not add a direct link here since clicking random links on the internet is not generally a good idea but I'm hoping most of you get the gist of it.
However, it looks like some content (most likely that which is on youtube anyways) is missing or the ordering is wonky, I'm not sure.
It would not have been much of a deal to view that particular content on Youtube, however YT has recently changed the GUI so that listing all videos and sorting that list is not possible or I haven't figured it out yet.