often seen in the street without a hat

Ah, I see it's up in a different section. I wasn't reading very carefully so I missed it. It is better than I first thought, but I think the way they're presenting the information is significant. The advantage of surprise for men is apparently unconditional (though taken in conjunction with other parts of the advice it does suggest non-violence), but for women they need to be reminded at that point that surprise will only take them so far. I don't think that it's a deliberate strategy on the part of the NHS, but that it's part of a broader discourse about who needs warning about what and how.