YouTube is experimenting with comment threading
Following the lead of just about every website and social platform, YouTube is introducing comment threading. But before you get too excited about gaining the ability to view nested replies and being able to follow conversations more easily, there are a couple of quirks.
Firstly, this is – for now, at least – limited to the iOS and Android apps, so if you access YouTube via a web browser, you are out of luck. Secondly, this is an experiment so try not to get too attached to it.