I would like to block all the videos belonging to a specific channel, including videos which are included in the youtube home page, explore section, subscriptions section, library, playlists, history, youtube search results, etc. This needs to apply both when using the youtube app and the web site.

As a result of the blocking the videos, descriptions, etc. (metadata) belonging to the channel will not be shown in the youtube home page, playlist, search result, history, etc. while other videos not belonging to the channel are shown.

This also needs to apply as new videos are added to the channel, so the blocking filter needs to be updated frequently, so that newly added videos are not shown either.

This may be more a content filtering feature, with awareness of the youtube API response structure, than a web filtering feature.

See also:
https://community.sophos.com/products/xg-firewall/f/firewall-and-policies/122076/how-to-block-all-youtube-videos-from-a-specific-channel/444074#444074