YOU SAID:

Tumblr seems to think that there are more than 50 genders.

INTO JAPANESE

Tumblr は、50 以上の性別があると思うようです。

BACK INTO ENGLISH

So I think Tumblr is more than 50 sex.

INTO JAPANESE

思うので Tumblr は以上 50 のセックスです。

BACK INTO ENGLISH

So I think Tumblr is more than 50 sex.