At the risk of also being called a “transphobic bigot” by the winner of this competition, I have to agree with the “not fair” assessment raised by their competitor. Being born with XY chromosomes generally gives a size and strength advantage over those with XX chromosomes, and it needs to be considered when classifying some competitions. Note, too, that sometimes the advantage is reversed.
‘Not fair’: World cycling bronze medalist cries foul after transgender wins gold
This is not a question of with which sex you identify; it is solely a question of significant, obvious and natural genetic advantage. The separation of sporting competitions based on such an advantage is fair; ignoring it is not. In this case, even if a transgender athlete suppresses their advantageous hormone levels as required by IOC rules the damage is already done. The effect of growing up male has resulted in stronger limbs, bones and muscles as well as larger physical size – likely providing some advantage over cisgendered female athletes participating in this event.
One solution is to categorize athletes by identifiable characteristics that reasonably group them into competitive categories, for instance by genetic sex (XY or XX chromosomes). Alternatively, we can open all competitions to all sexes and orientations, then group competitors by physical traits such as size and weight. This last alternative will likely produces dominance by one group or another in some cases, but would not involve sex or sexual orientation in the decision process and thus will at least stem the current controversy.
Not all opinions are the result of bigotry; sometimes people just disagree. In these cases civil discourse is required, not petty insults.