I saw it live, and Brit was pointedly talking to Kristol, and the word 'activism' was the effect of a bullet, IMO...to Kristol.
His point to Kristol, is that this one speicifically ...and I thought he inferred....to others, they would not have sustained the vetting process.
....Regardless, I know Brit specifically mentioned this one woman, and it took Kristol by surprise, and Brit inferred that this is the woman Kristol wanted on the court.....and she simply could not have survived vetting.
You are correct in your review of Brit's statement. However, I think his point was to Kristol that the Kristol didn't really 'know' all those people he was "approving" of. There were issues with one, perhaps there would be issues with more of them.
There may have been more that I missed, but I don't think it could have been more than a sentence or two. Batchelder was the only one he mentioned by name.