All very well and good, Phil, but your first aid examples are hardly much to do with sensitive areas such as romance/imaginary sexual assault, with the later two especially having such nebulous borders as to render male/female interaction almost taboo, leading to extermination of the species - were some people allowed to rule the roost. Perhaps it was to thwart such minds that nature gave the male such a strong - albeit blinding - sexual drive.
I believe that you have simply created a straw woman argument - just to be different - and exactly the diversionary example with which the non-thinking reader will automatically sympathise, just as would any divorce lawyer with female client try to achieve. Regarding the lady with the assumed spider bite - did you catch the spider - did you get to see one - did you not later suspect something else was being played out to which you could well have been oblivious? Are you a dermatologist capable of distinguishing bites of spider from those of bedbug, mosquito or horsefly? Of all these factors I have no more idea than anyone else not present, which just shows you how difficult these things can be, especially in a court of law; and if there was nobody else around, no independent witness, then even more of a delightful little riddle if no assault case comes from it! Delightful, of course, would depend on the condition of the person with the "bite". "I still asked before examining, even though she requested assistance. It is respectful, it builds trust and confidence, and it's just plain the right thing to do!" Phil, you could hardly rip her shirt off without asking, with or without witnesses, could you? Even I might suspect anyone doing that was being a little less than altruistic, with or without spider extant! And at the very least, should witnesses be present, you were simply covering your own legal ass! As for the young cyclist - I don't imagine you had to squeeze his genitals to make sure his back wasn't broken, did you? So why would there still be a need to say anything other than to declare a professional ability/science you may have to help? (In my own case, I'd have seized the opportunity to tell those cyclists what a boody menace they are on Mallorcan roads, and that they should be bannished to velodromes where, as they have just proven, they can enjoy their inability to avoid one another, never mind interact sensibly with motorised vehicles!)
"Point is, make every effort to gain consent, regardless of the situation." Indeed, and I'm sure that's a clever thing to do in this litigious society which we are becoming. even outwith the States.
But it's not designed (this mindset) to propagate the species, any more than is rape. What it is is society ever more a victim of contemporary socially PC mores.