Cory Doctorow Explains Why Big Tech Is Making the Internet Terrible https://jacobin.com/2023/05/cory-doctorow-big-tech-internet-monopoly-capitalism-artificial-intelligence-crypto/
The concern I have is that the reduced scrutiny meant less people involved to give input and point out weaknesses in the design of the system.
ActivityPub has some serious deficiencies, for example when it comes to privacy, decentralization, and resource usage.
Had there been more scrutiny and eyes on the development, maybe we wouldn't now be saddled with those issues.