I don't use Facebook at all, though I have an account. Messenger is perfect for me because I only care about the [very rare] chances that someone sends me a message on Facebook. These have always been friends or family that I haven't talked to in a while, actually! And they don't always have my phone or email address...
I'm also in the "Messenger-only" camp aside from college events before I graduated. Messenger is honestly handy and fun but most importantly for me everyone is on it and active. It's simply the best way to reach someone for me.
I came across these articles a while ago and decided to check my filtered messages just out of curiosity. I hardly ever use fb anymore so I didn't expect to find anything. Lo and behold though, there was a two year old message from my best friend from elementary school who I had lost touch with forever ago. Lesson learned: don't trust Facebook with anything important, they'll fuck it up even if it's one of their core features.
It seems to have become even more cumbersome and confusing in the recent times. FB does not indicate that there may be message requests or filtered messages (even from "friends") waiting to be examined. It seems pointless when you see a message very late and wonder how it could even be missed. FB's message system cannot be trusted with the lack of notifications about these.
