The first quote is implying that "hetero" is the norm, it's inherently homophobic to suggest that homosexual people aren't normal
People are saying "I'm not cis I'm a woman who needs no qualifier". It's normalizing being cisgender to suggest that all women are cis, again, inherently transphobic
Most people on the planet are heterosexual so that is as a species, 'the norm'. Not one person here has suggested that this means in any way that being gay is somehow abnormal.
Cis is nonsense. Women are female. We don't need a qualifier to distinguish us from a subset of men.
Using the term 'cisgender' is simply you forcing your religious beliefs, that you think people can somehow mind over matter themselves to being the opposite sex, onto everyone else.