I'd say even half of my Youtube feed nowadays is.

1. Find some nicher but interesting topic (e.g. some historical event like Lepanto's battle)

2. Have AI generate the content of the 20 minutes video by collecting information about it online

3. Have AI generate the video

4. Have AI generate a realistic voice to comment on the video

5. Upload it without mentioning it's all AI generated

6. Have me get mad 4 minutes into the video because footage/paintings referring to that battle...do not exist at all...slowly realize it was all AI generated

The YouTube algorithm got unbearable to me even before the mudslide of AI content.

I highly recommend using an extension like Unhook and disabling all algorithmic recommendations such as the Home feed, sidebar/endscreen recommendations etc. The only way I interface with YouTube now is through the subscriptions page which shows me videos from creators I follow in chronological order.

There is a "do not recommend this channel" option somewhere