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It's not just you — no one is posting on social media anymore
(www.businessinsider.com)
This is a most excellent place for technology news and articles.
BeReal was a neat idea, you'd get a random notification with a short timer asking to show both cameras. It was meant to cut down on manufactured posting - the random notification to try catch you in more boring times, and the short timer to stop you prettying yourself up.
I guess it was trying to be a more authentic social media, but maybe that doesn't appeal to the Instagram generation.