To elaborate, while the errors in the middle of videos were because of general anti-bot measures, the errors at the beginning of videos were caused by a change that specifically targets third-party clients like NewPipe and youtube-dl. This is definitely part of an arms race.
Nice, love to see more alternatives in this space. I’m currently using GlazeWM, which provides an i3-like experience on Windows. To the ones saying ‘just switch to Linux’, I used Linux full-time for many years but switched back to use Windows-only software, and a tiling WM and a package manager like Scoop goes a long way in making it more bearable.