Oh wow I hate this. So I tested it a little on a side blog and this is what it does
Then, if you go to the notes on the original post, it only shows the reblog from "two"
So the OP doesn't get to see how much engagement their post has unless people like/reblog from the original post. If someone adds any sort of comment, it splits them up like this. Artists, writers, crafters will see less engagement, nobody will know how far the reach of their post is or if someone says something nice about it. If you want OP to know, you'd have to make a conscious effort to reblog from the first post listed in the chain.
Not only is this going to be bad for general community things, but this could easily promote harassment. You won't see anything but the initial reblog from you if someone makes an addition, so there could be whole conversations that go completely missed.
Thanks, tumblr. Very cool 👍
EDIT: Also, the posts aren't even properly displaying the notes YOUR SPECIFIC VERSION of the post is getting, which this post has shown me.
This is what I see looking at my post at this moment:
But if I go to the reblogs tab of my activity page, we can see
There's a few more than 20 reblogs.
