Meta is killing the Messenger app for Apple Watch on May 31
https://techcrunch.com/2023/05/11/meta-killing-messenger-app-apple-watch-may-31/
Meta is killing its Messenger for Apple Watch app on May 31, the company confirmed to TechCrunch on Thursday. Apple Watch users who have the app installed are being notified that “after May 31st, Messenger won’t be available as an Apple Watch app, but you can still get Messenger notifications on your watch.”
Although you will still be able to receive notifications for new messages, you won’t be able to respond to them and will instead have to use your iPhone app to do so.