The thing about cross sex hormones in sport is that we've seen it all before, and it was cheating.
Many Eastern Block female athletes who were doped (against their will) died prematurely. There is an excellent FILIA podcast with Sharron Davis talking about it.
They died because oestrogen really matters to female bodies - if we lose it before 45 then NICE want us to have HRT in order to protect us from coronary heart disease, dementia and osteoporosis.
Flo Jo was a tremendous athlete, and doped. Died at 38.
So, whilst, yes, Laurel's inclusion is an outrageous assault on women's sport, I think Laurel highlight's the lack of science supporting the use of cross sex hormones and that none of us would want to see harm done to the trans community through hashtag-be-kind.