Gotcha :)
I don't remember where I read that it was the plan, but it was definitely official, I think perhaps steemitblog?
They're going to cut the penalty period from 30 to 15 mins, and return lost curation rewards to the pool, instead of sending it back to the author.
I touched on the amplifying nature of quadratic rewards in that video, including that stat that 25% of the total weight could reduce the payout by 50%; but I didn't go into a great deal of detail.
We'll probably see more discussion around quadratic rewards soon anyway, as it looks like Ned will be bringing it back when he brings in account based (rather than stake based) voting for an SMT he's hinted at.