I think I get were the “server costs” come from. The twitter algorithm they pushed to GitHub FIRST gets a set of like a thousand tweets to show you, then filters them, getting rid of blocked accounts for example. If you use one of the large block lists, you know, to bypass the lack of moderation, there is the “risk” that they neeed to do another request to get enough content to fill your front page of irrelevant stuff you don’t want to see.