I do understand why she has that kind of advert. You don't have to go far (e.g. SAAFE) to see the kind of stupid/weird shite some punters and timewasters ask SPs all the time. Sounds like she's sick and tired of it. Of course a professional, cool headed SP should be able to weed out creeps and ignore them so that she doesn't have to say exactly how she feels about them. Her ad seems to be backfiring as she is putting off 'normal' punters whilst creeps will probably ignore her and still waste her time regardless.
To me, her ad shows she's a feisty, strong willed woman who doesn't suffer fools gladly. I wouldn't go see her, not in a professional SP/SS capacity anyway, but in real civvy life I do like a strong willed woman, they are a challenge - and I'm always up for a challenge.
Going back to this particular SP, you never know, her feistiness may attract some of those punters who seek a very assertive WG, she might even do better becoming a Dom.