Aye - and I've been reading the PAN SLOWLY advice from the old hands in this forum for a long time. As for publishing a YouTube video at 60fps, I'm not certain what the benefits are. I can see the value in filming at 60fps when you want some slow motion sequences or just to process down to 30fps for smoother video; but publishing at 60fps seems like you are incurring playback overheads for nil or marginal benefit.So, I think it's up to the videographer to improve the viewer experience. First of all, PAN SLOWLY. You can always speed it up in post if necessary. Second, you don't need to shoot and produce at 60fps to produce stunning video. Use 60fps when you need to capture fast moving action in front of the camera (or don't mind limiting your audience to people with a fast computer and internet connection).
And most of your potential audience can't view 4k video, let alone 4k60, so all that weight and processing time is wasted on them. For this majority, does 1080p/30 source video display better than 4k video which has been downscaled by YouTube's algorithms?
It's a tough call. If you have the tools to create 4k/60 video then people tend to want to use them. But their efforts are only ever seen by the few. And the number of people who can play them as smoothly as they run on your hard drive could be very small indeed - at least for a few years yet until everyone has souped up rigs and ultrafast broadband. Trouble is, by then, the video buffs will have moved on to 6k or 8k video and it will be rinse and repeat.