Facebook is ordering users to switch to a different Messenger app which demands access to lots of personal information.

It's proprietary software, thus inherently untrustworthy, so using it is an act of folly. The same is true of Facebook's main app, and the nonfree program (in either iThings or Android) for accessing the app store where it is released.

In Android, that program is called Google Play, and it has a back door that is more or less universal.

Of course, you shouldn't be used by Facebook at all, because it extracts personal data that nobody ought to know.