Bulk unsubscribe channels on youtube using javascript

Why

I've recently recognized that I am subscribed to 200 channels on youtube!, 200 channels I have subscribed since I started my google account (which is around 10 years back). I think at this point, there is more noise than signal. So I thought it's time to hit the reset button.

The idea is that, I will remember the channels which matter to me and re-subscribe.

How

My initial idea was to do it via a python script using the youtube API. But I thought this is a complex solution for a very simple problem. Then I looked into the API requests from youtube websites to see if there is any pattern I can observe and take advantage of. Did not find anything easy there as well. The easiest way to achieve this would be just to stimulate what I do manually, go click on un-subscribe and confirm the un-subscription. This can be done with a simple javascript snippet which can be pasted directly in the JS console.

To see all the channels you are subscribed to, go to this link. To unsubscribe, first click is on the "SUBSCRIBED" button and after a small animation, a modal pops up. The "UNSUBSCRIBE". Since there are two steps, it makes the script slightly complex. Here is the script

unSubBtnList = document.querySelectorAll("[aria-label^='Unsubscribe from']");
for (let i = 0; i < unSubBtnList.length; i++) {
	setTimeout(() => {
		unSubBtnList[i].click();
	}, 1000);

	setTimeout(() => {
		document.querySelector('[aria-label="Unsubscribe"]').click();
	}, 1000);
}

aria-label is used for accessability purposes. I assume this is something youtube does not change often, so this script should work for a while. The sample aria label would be aria-label="Unsubscribe from Lex Fridman.". The pattern here is that they all start with Unsubscribe from. So we retrieve all the buttons, iterate over them. Click the button, wait for a second for the modal animation to complete, search for another button called Unsubscribe and click that button.