“This person is unavailable on messenger”?

So on Facebook. I know when someone blocks you, it says that but their photo comes out.

But what if they’re profile is active. But on their messenger, it says “this person is unavailable on messenger” but there’s no photo. Like the photo from their profile doesn’t show up. It’s that grey outline of a person that shows when someone has deactivated it, yet their profile is up. Is that weird, why is it showing that?
“This person is unavailable on messenger”?
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