same reason weight makes a different in boxing, you wouldn't put the super heavy weight up against the phantom weight.
Men are physically much more advantaged, denying that and saying "oh but we're meant to be equal" is retarded.
if an ordinary able bodied woman beat a disabled man it would looked upon as even worse than an able bodied man beating an able bodied woman, because there the difference in strength and capability is even more.,
the average male has the capability to thoroughly destroy the average woman in a fight it's like picking o na 14 year old boy when you're 27.
but that doesn't give women an excise to hit men and expect no come back, once you start it they have eery right to use reasonable force to retaliate.
Thats all very logical but in society a muscle bound 6ft dude hitting a 5'5 weak MAN is seen entirely differently to the same person hitting a 5'10 women who is physically stronger than the smaller man.
You're right, we shouldn't let huge guys get in the ring with tiny guys, in terms of safety and in terms of sport its never going to be a fair fight. But people talking about women beating aren't talking about it like that, its in terms of the societal taboo that is hitting women being completely unacceptable while hitting another man is seen as much more acceptable. LIkewise a woman can hit a man, but if a man defends himself and hits her, everyone is suddenly on the womans side.
While its the same act, this is two entirely different arguments being made.
As for what his background is, meh, bone density does actually change pretty significantly with different hormone levels, the bone density of people aging and I think women post menopause changes quite hugely.
THe real complexity, as someone picked up on those having HRT in MMA, is what is "normal", and what is fair, and what is deemed acceptable?
If one man naturally has testosterone levels that enable him to be much stronger than any other athlete, and his higher natural testosterone levels than others who cheat by taking extra testosterone, is that fair, should he be excluded? What about the female runner from, I forget where, somewhere in Africa that look like a man largely because she has essentially a male hormone profile?
There is no fair, while he is a man who has chosen to do this, there are other women who have man like hormone levels and end up being a huge *****, who in general will be very unfair for other women with "normal" hormone levels to fight.
Should someone who gets into fighting as a career, who half way through gets an illness that cripples their hormone function be punished and unable to supplement back to what are deemed normal levels, and then again we're back to what is normal, what is fair.
Its all a murky area, for me I would go with, he's a man, its most fair to put him in with men fighters. If he was a smaller man with a more feminine body who had the op I might think differently, but he's got a very many build and that is an unfair advantage.
I also have no problem with people taking testosterone to get to a predefined "normal" level if they have seriously low levels, not least because ignore the sport, really low testosterone levels can absolutely and MASSIVELY effect your day to day life, low testosterone is linked to numerous health problems, depression, lack of energy, it can destroy your life and someone shouldn't have to give up a career they've worked hard for or carry on at a huge disadvantage and in an unhealthy state because of some issue they aren't producing enough testosterone.