This seems like a solid response to Instagram eating their market share, as Instagram suffers from exactly the problem described (of course, as intended because Facebook's entire business model thrives on it).
I absolutely abhor and detest the way Facebook, Instagram, and Twitter mess with my timeline. At least give me an option to sort everything in a reverse chronological order -- no "tweets I may have missed" -- by default. I hope the left friends screen will not have this mess.