I ended up behind on this for one reason and another.
I agree that this was/is Serena's tipping point although other things ought to have been before this
I don't think anyone hasn't said anything I hadn't thought except for :
It makes me sad that lovely Josh Lyman from West Wing is now cornering a market in "intense, creepy, old guy" at least in the last 3 things I've seen him do
(Get Out, The Post, and this )