Twitter has over 300 million monthly active users. That is roughly equal to the entire population of the United States. You can't see any reason why they shouldn't be allowed to have total control over political discourse with no accountability? No reason at all?
Yes, the reason is that their buddies at places like Google put their thumbs on the scale in order to prevent competition. Do you think it's an accident that Google SERPs are filled with mainstream corporations?
The privacy angle is a total distraction. The intent of these "exposure notification" apps is to tell you that you have been exposed. Six degrees from Kevin Bacon means everyone gets a notification, everyone lives in fear. Fear is the most powerful tool for control.
It's because the amendment was never to authorize spying on browser history, it was an amendment to BLOCK it which was voted down for being a distraction and potentially limit FISA spying in other ways.
The only problem with this (and it is infuriating) is that while Chrome and Firefox render box positive box-shadow values identically, they differ substantially with negative values. As a result, to get matching shadows you will need to use browser-specific shadows.
Alarm bells are ringing from their refusal to release the original code. There is no justification whatsoever for that, and the excuses given are totally unrealistic.