Personally I think the conversation on this thread needs to stop thinking this product criminalizes content choice. If my interest is engineering blogs and most engineering blogs are written by men its ok for me to predominantly follow engineering blogs. What this product (to me) is there for is when I want to branch out I have an option for doing that in a powerful new way.
Finally (offtopic) I think we do need to have more civil conversations about virtue signaling. I don't think this product or announcement is virtue signaling. But virtue signaling IS a big problem in Silicon Valley, people shouting from the rooftops how they want to do good before quietly slinking back into a board room to do bad.
Good job OP, I'm not a hardcore twitter user but will definitely follow this projects development and wish it the best.