> There is no broadcast,

Wrong.

In your notifications screen (who liked your stuff), you can change pane and instead see what your friends has liked.

Most people don’t know it, but yes, it means you can “spy” on your spouse or vica-verce.

It’s the sort of creepy most people wanted to avoid when they left Facebook, and unknown to them, Instagram still has it.

The "likes/comment" notification is still chronological. And if you follow around more than 300 accounts, then it's quite difficult to spy. But if you follow only selected few people(say <50), then yes, it is much easier to spy.

I’m getting downvoted and I’m not sure why. In case anyone misunderstood my comment, I didn’t encourage people to spy.

My comment was merely meant as a correction to an incorrect claim and making people aware that they can be spied upon, also on Instagram.