According to joyscribe.com
"This time, the Facebook-owned app is reportedly testing a feature that hides how many likes your post has received."
"Researcher Jane Manchun Wong first discovered the feature and shared it via Twitter. The app apparently states, “We want your followers to focus on what you share, not how many likes your posts get”. This suggests that Instagram is trying to reduce the sense of competition."
Get more at joyscribe.com