I already largely watch YouTube through RSS feeds to find the videos and yt-dlp to download them locally. Ads injected straight into the stream will be annoying, but still just as easy to skip as the sponsored content sections of videos. That said, the ads on YouTube have gotten more and more scammy and suspicious over the years, so I don't particularly appreciate being incorporated into the video feed itself. But it doesn't materially change much of how I watch YouTube anyway.