YoutubeFeaturedAutoplayBlocker автор GoraniPie

What it does
- Prevents user-disturbing autoplay when visiting a channel
- Keeps the featured video visible but not force-played
- Respects your control: autoplay is paused once. Does not erase interferes

Features
- applies to /@channel/featured type URLs
- Automatically pauses once after the video loaded
- Supports YouTube's Single Page Application navigation structure

Source
https://github.com/GoraniPie/YoutubeFeaturedAutoplayBlocker