OP posted this in the instagram section by mistake, he's talking about twitterWhat do you exactly mean with "ghosted"? It seems as if Instagram is reducing some accounts of being promoted on the explore tab from which many of us got good likes from. I don't think Instagram is hiding posts from a user's feed.
At least I know that I'm getting almost every post from the people I follow. I checked the last few days as I read here and the posts I see on the timeline are the exact same ones I see on their profile.