What matters is what happened, not hypothetical what-ifs.
Jaffe says what the guy did was clearly and completely gross. The guy himself should've known what he was doing was clearly gross. He did it anyway. He is at fault. How the woman who was exposed to his grossness reacted, all the what-ifs or maybes of have things could've gone down, doesn't matter. It's not at all her fault this dude did something he should've known was clearly gross, and which everyone here agrees is gross, to her.
Saying this isn't harassment because even though it is clearly gross and wrong(?) because she did not react in the perfect way in the moment is wrong.