I understand that reducing the worthless drive-by dismissals based on unfamiliar formatting was the objective of the change. My complaint is that there are a lot of comments like mine, which I hope is not worthless and which is based on reading the entire transcript as well as watching parts of the talk, which will never be made because you can't write those comments if you just watch the video. Also, watching the video takes a long time, so many people won't bother.
I would have liked to read those comments, even if there were worthless drive-by dismissals underneath them. I think it's bad to eliminate thoughtful discussion because the conditions necessary to produce it also cause discomfort in our less thoughtful brethren.
I certainly agree with your second point that some people prefer reading transcripts to watching videos. I used to be one of them until a year ago!
There are things that work better in some sort of video. GUI demos, mechanical movements, some kinds of data visualizations, and facial expressions, for example.
Now that you mention it, I tend to pause and rewind a lot. But I likely do miss connections that are more than a few minutes apart.
I think "not making a comment if they don't have anything to say about the content" was the goal of the change. Reduces the noise on the page (I seldom go to page 2) and probably also the moderation burden.
(Hi Kragen!)