Two things can be true at once: 1. Substack can be trying to mine the follower graph from Twitter in order to bootstrap its upcoming twitter-clone, and Twitter

Two things can be true at once: 1. Substack can be trying to mine the follower graph from Twitter in order to bootstrap its upcoming twitter-clone, and Twitter can object to this and try to block Substack from doing it whether by API or direct crawler 2. Twitter can be blocking people trying to link to content on Substack, to punish Substack for making a competitor and trying to port Twitter users over The first is reasonable enough, outside of maybe some anti-competitive law questions that I think probably(?) don't actually apply (but I'm not a lawyer). The second point isn't inherently unreasonable in other circumstances... but it does fly completely in the face of all Musk's rhetoric about free speech, and things that have been said criticizing Twitter's former actions blocking discussion of e.g. the Hunter Biden laptop story. Particularly since the people it's directly hurting are the people publishing newsletters on Substack. Seems particularly like an own-goal given that the immediate effect is driving off the people like Taibbi who've been giving Musk cover for his claims with the whole "Twitter files" thing.