i didn't find what i was looking for, but i did learn that this exists:

https://www.youtube.com/feed/history/comment_history

i missed some things, and i'm going to have to cycle back around.

that being said, it should allow me to be more complete as i move forwards. i was previously trying to operate out of my firefox history, which was imprecise. this will get every single one of them.

so, i'm actually going to have to spend the next few days consolidating local files and clearing the comments out. once i get caught up, stating that i'm done a specific month will mean i've also cleared out the firefox history and both of the youtube profiles.