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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.
It's not just about content creators becoming good though, the article also explains how the algorithm pushes that content over others.
Granted, the quality of the content is still a big part of it, another point it makes is that people refrain from posting things because it's not "good enough" compared to others.