Youtube's compression already butchers the quality of anything 1080p and below. Uploading in 1440p or 4K is the only way to get youtube to preserve at least some of the bitrate. There's a 1080p extra bitrate option available on some videos, but it's locked behind premium, so I'm not sure how well it works.
Depending on the type of video this may not matter, but it often does. For example, my FPS gaming and dashcam footage gets utterly destroyed if uploaded to youtube at 1080p. Youtube's 4K seems roughly equivalent to my high bitrate 1080p recordings.
Depending on the type of video this may not matter, but it often does. For example, my FPS gaming and dashcam footage gets utterly destroyed if uploaded to youtube at 1080p. Youtube's 4K seems roughly equivalent to my high bitrate 1080p recordings.