The point that seems to have got less attention than it deserves is the balance of resources spent on CPU vs GPU - ie M1 Max is a big GPU with a CPU attached.
Yes these machines are used by lots of video editors etc but it does seem to be symbolic of a general shift towards more compute being done on the GPU - now even on laptops - and not just for video.
And having more GPU compute available at your fingertips will only reinforce that trend.