I Have a Question About Relationships

I mean this in no offensive way at all, sorry in advance to those who are offended, but when did the world go from:
Gender: female/ male/ transgender
Sexuality: heterosexual/ homosexual/ bisexual/ asexual

To accepting all of the above with another 20+ types of genders/ sexuality (eg pansexual, genderfluid/ agender/ skoliosexual/ demisexual etc).