The author is a PhD student. Doesn’t say a lot for the academic rigour of their university.
A couple of his points randomly picked from the pile:
Most women take part in sport for fun and exercise , not professionally so it doesn’t matter if they compete against transwomen. 
Objecting to athletes competing in women’s events who are genetically male with DSD and who are from African nations is racist. [I don’t know what you would call objecting to genetically male athletes with a DSD who are white competing in women’s events , unkind probably]