I really want to make a matrix servers not listed there list.. but I suppose it would have to be broken up into different pages and hosted in different parts of the world for different issues.
I have an open to the public (adult public) matrix server that will never make it on that list - and federation is turned off so it wouldn't show up in the rooms lists or whatever of any of those also.
The list contains several NSFW rooms so although federation would probably be the only problem.
A general list that isn't auto-generated through federation might work, but you'd have to put in a lot of manual work to make sure the list is up to date.
I have an open to the public (adult public) matrix server that will never make it on that list - and federation is turned off so it wouldn't show up in the rooms lists or whatever of any of those also.