What's not to do with sport? The lady has stated that she is not big, doesn't mention speed, and explains that she makes up in skill for any lack of strength! She is a fully qualified coach, has played right up to the highest level of the women's game. Even in the women's game, you do not last long if you can't take more than a few, sometimes very hard, knocks.
Might it just be that she knows what she is talking about? Might it just be that, unless you can match her in those areas, you do not know what you are talking about?
What she said was "I’m a solid force to be reckoned with in the domestic club game, but at 5’5” and roughly 185 lbs. in season, I’m significantly under the average weight and height for international players in my position. It’s never been a factor for me. I’ve taken on cisgender male athletes in training and female athletes much bigger than me without hesitation because I’m confident in my skill set. Being small didn’t stop me from getting 19 caps."
She has not said that she has beaten biologically male elite athletes in a competitive Rugby match - only that she has taken on male athletes in training without hesitation. That just tells us about her attitude, not her ability against male elite athletes. I'm smaller than average and I've taken on male kick boxers many times but I'm not living in some fantasy world where I claim I could have beaten them in a competition - during training they are pulling their punches and kicks and trying to help me train and improve. In a competition they would be trying to win and I would get hurt. My 15 year old daughter is a club swimmer and swims competitively. She is below average height and would not stand a chance of winning a competition against a similarly trained male competitive swimmer as they would probably all be taller, stronger, and with a longer reach than her so would be faster than her - there might be an exceptionally short boy with similar muscle tone her age but it's very unlikely. But during training the girls and boys compete together in mixed team relay races.
It's misogynistic to claim that the feelings of transwomen trump the danger to biological women of getting physically injured or the injustice of biological women competing for recognition against a whole category of people who have natural biological advantages over them.
I don't see how the risk of mental harm to biological men caused by not playing rugby can be more important than the risk of physical harm to physically weaker, more vulnerable people from being allowed to play -pretending physical injury is less important because biological women are the victims seems to go against everything feminism and equality stands for.
I find this a very strange argument from the trans lobby. I'm all for allowing people their beliefs - whether it is about religion or whether it is people getting comfort from believing they are a particular gender that is different from their biological sex or people believing that their physical handicaps can be ignored. But biological advantages of being male are a reality. We can't pretend they do not exist any more than we pretend that the advantages of being able-bodied do not exist, hence disabled people are allowed to compete in their own distinct categories so that they are not unfairly disadvantaged against able-bodied people.
Some people get comfort from believing that death is not a biological fact and that there is a part of them that goes on living for eternity regardless of the biological/ physical evidence of death. But it would be unreasonable for society to ignore the biological facts and require us all to act as though we believed that death is something "assigned " by doctors and the dead person is actually alive. There are no doubt many people who strongly believe in eternal life and this belief forms part of their core identity and it is probably mentally distressing for them to have their belief in eternal life contradicted by biological facts. However, we don't allow them to ignore other people's rights to not be physically harmed because they feel really really distraught if someone challenges their belief that no one ever really dies.