Twitter bans users from linking to other social media platforms like Instagram and Mastodon

Update: Elon Musk says the policy will be adjusted to only forbid accounts that are primarily advertising other platforms, and casual linking will once again be permitted.
On Sunday, during the World Cup, Twitter officially banned its users from linking to their profiles on other social media sites like Mastodon, Facebook, and Instagram. Mentions of other platform handles are also now banned.
The policy means Twitter users flocking to Mastodon are no longer allowed to tell their followers to go