No,you're arguing that rules have to be absolutes in terms of how they are applied. I disagree. I think here the rules in women's sports are such that by default men should not be competing in them.
Fine so you think the rules around eligibility to compete in women's compeititons should be framed in a particular way - we get it NS. Hardly news to us. And indeed this is what seems to be the case now for that competition, so I would have thoought you'd be happy for that rule change.
But that isn't what we are talking about - we are discussing whether sports competititors (and perhaps others) should be held to the rules that are in place now or the rules that were in place at the time of the competition. Regardless of views on whether the changes in the rules was sensible or not I don't think that someone who competed fairly under the rules in place at the time (i.e. broke no rules) and won should have their title removed on the basis that had the current rules applied they would not have won.
That seems to me to be a pretty fundamental principle that can surely be applied more widely in other circumstances where there are 'rules' or 'laws'.
So an analogy, that maybe will pull you out of your narrow rabbit hole. In Wales in the last year rules were changed so that many speed limits were reduced from 30mph to 20mph. Now if someone was driving at 28mph before the law was changed (perfectly lawfully) the analogy is that they should retrospectively be held to a rule that wasn't in place at the time - so fined and points for driving at 8mph above the speed limit (even though the speed limit in place at the time was 30mph). I think that would be grossly unfair - and my opinion on whether I think 20mph speed limts are a brilliant idea or a bonkers idea has no relevance in a discussion at to whether someone should be penalised for breaking a law that wasn't in place at the time.