Personal ethics are indeed personal. Of that I'm sure we can all agree.
However I think you have missed the entire point with your "capacity for clear thinking" comment, which surely you must understand is not unfettered by personal consideration.
Allow us to look at an example to help you escape from the cage of your personal experience:- In the 1970s, in any office environment you may have had a couple of moustachioed gents, dressed perhaps in brown corduroy jackets, happily puffing away on high tar level cigarettes, when a young lass, possibly the boss's secretary tottered past them in her high heels. Now back then one of them may very well have given her a firm pat on the backside and said something like "Woooooof! Looking good love" and high five'd his buddy. She may well have cast a playful backward look and giggled saying something along the lines of "Behave, cheeky bigger!" and tottered on.
Well let me tell you that back then if someone shocked at that very behaviour in that the office, said "you know, in the future that may very well be considered tantamount to attempted rape", someone may well have replied with "well anyone with a capacity for clear thinking can see they are very different things". And that reply would be very wrong because what would have happened here is that someone with a very strong sense of personal ethics has managed to cut through the fog of that society's views on sex at that precise moment in time to see CLEARLY what is right and what is wrong.
And that is why you shouldn't wear Vaporfly 4%s unless you are a cheat.