I can't tell if you're being satirical or if this is some 1984 re-writing of history, but Twitter definitely banned linking to other social media websites under Elon's rule.

> "We know that many of our users may be active on other social media platforms; however, going forward, Twitter will no longer allow free promotion of specific social media platforms on Twitter," the company said in a statement.

https://www.pbs.org/newshour/economy/twitter-bans-linking-to...

https://www.nytimes.com/2022/12/18/business/twitter-ban-soci...