I agree

I heard they were barely able to contain the site at the end as the growth began and expense of maintaining it skyrocketed.

You can also try out ReVanced if you wish to access YouTube with your account

https://github.com/ReVanced

I guess such things are going to get broken as well if YouTube walks down that path.

This

Where can I change this list?

deleted by creator

Why did they remove it though? I was surprised too when I found out I needed to run local webserver to access local html files

Not that I can think of other than having more control (such as adding any Blocklist etc)