Why doesn't Facebook's Android app let you share links or posts from the Newsfeed with friends in a private message, like you can do from the web version? This, and other seemingly arbitrary and unfriendly limitations of Facebook mobile, like not being able to share the links to other apps, have been aggravating me for a long time.
The reason can't be technical since it should be trivial to implement and it's a standard feature of most other apps (on Android at least). And I don't think it's oversight since its been the case for ages; I can't be the only one who complained about it or requested it.
The workaround of opening the link, then copying it from another app, then going back to Facebook, create message, and paste link involves many steps that should be automated. Or opening the link then sharing it from default app to desired app, example (Facebook -> Browser/Youtube -> Whatsapp) instead of (Facebook -> Whatsapp). And it can't be done at all if the content is hosted on Facebook.
Not sure if it's just like that on Android?