via NBC:
Twitter has put restrictions on how its users interact with posts that contain links to the newsletter platform Substack, just days after Substack announced it would launch a Twitter-like feature called “Notes.”
When trying on a desktop computer to retweet or like a post with a Substack link, Twitter returned a message: “Some actions on this Tweet have been disabled by Twitter.”
On the mobile version of Twitter, likes and retweets of posts that shared a Substack link did not work.
It also appeared that Twitter had made it so that users could not respond to tweets that included Substack links.
Twitter goes to war with Substack…
We're investigating reports that Twitter embeds and authentication no longer work on Substack. We are actively trying to resolve this and will share updates as additional information becomes available.
— Substack (@SubstackInc) April 6, 2023