I am sure we have all ran into this problem. Let's say you have a YouTube channel where you post regularly. It has 100s or even 1000s of videos. How do you manage changing the pinned comment across all these videos every once in a while without using 3rd party products like TubeBuddy. Is there a bash script or a programmatic API that you are aware of which can handle this? What are you guys doing on your end?
I have never run into this problem, but I would use the Firefox developer tools to capture the request that gets made when I change one comment, then replay that request for all other videos.