ykw? Newsmast claims to be curated lists. They fairly clearly are not, but instead simply cherry picking topics most likely to rile people up and trying to give them more attention.
The same model used by Twitter, Facebook and its ilk.
The #fediverse is not a place I go to be riled up. It is a place I go to talk over the back fence with my online neighbours.
So I blocked them. And I think I will be doing more of that.