This was sad for me especially; my favorite medium on the internet ever was webcomics. Webcomics still exist, sort of, but the loss of independent publishing and aggregation meant that they had to change to survive.
The shape of webcomics started to get shaped to the shape of Twitter's image box.
This may seem like an enormous aside, but it isn't. The big sell currently is that "you don't need to run a relay because you can run your own PDS!" but as I have illustrated here, the distribution and syndication power dynamics matter a lot.