Is it true that most Fortnite players are under 13?

Is it true that most Fortnite players are under 13?

I recently worked in the daycare center and when I was 6 I told them that they were playing Fortnite😅

There's no other explanation

It's hard to say, Epic Games or whoever can't just look at how old the people are and in surveys many want to come over cool and then say e.g. "Yes, I play Fortnite" although it should read "I would like to play it, but I'm not allowed to". I'm "critical" of the topic and with shooters it is difficult to say how old the players really are, unless there's a voice chat that is used actively, which is not the case in Fortnite.