Not allowed to view profile

Occasionally there's a profile saying this. I'm fairly new here, what's the reason for that message?

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I think they’re probably a minor - just no age information shown. You can also restrict who can message you by age. I just wish I didn’t see the post if I can’t respond.

looking4thesun · M

@Softandsweet2 exactly. If we can't see the profile because of age restrictions then the same should apply to their posts as well