I don't understand why anyone would feel offended over a fictional world's view on marriage.
See also gay marriage in skyrim rage and Bisix DA2 rage.
As a Thalmor I am offended and feel discriminated against because this game does not support my views. I believe I should get to send all the humans away from Nirn so I can let my arrogance and superiority complex support me for the rest of my life. Any other Thalmors feel the same way?
On a semi serious note there has been a few times I've wished I had the option for why yes my High Elf IS a Thalmor spy.