Yes. I stopped using Facebook as much when they got rid of the chronological order feed. I know Twitter keeps talking about it and if they truly went to it then it would destroy the service. I don't use instagram but I'm sure it's the same thing.

It's obviously not for user benefit, so I think it's mainly a monetezation thing. Once you aren't committed to showing things in chronological order, you can charge to appear at higher spots. This is what happened at Facebook -- work businesses and organizations put in to get organic "likes" was suddenly made worthless, but coincidentally here's how to purchase ads!