Of course you have an opinion, we all have an opinion. What you don't get to have is a say in how they express their beliefs while performing a rite of their own religion.
"If they work on it?" Why on earth should they?
I just cannot fathom the idea that it is somehow the duty of Purples to make their religion palatable to me as an Orange. There are lots of religions I disagree with, some quite vehemently.
But I am not entitled to go into their house and tell them they ought to be/act/think more like ME.
I'm not sure if you are trying to on purpose misunderstand what I am trying to say.
All I am trying to say is: You are inviting Oranges into the purple church for a wedding. Is this really the time to center the sermon around a particular part of the purple teachings that is really offensive to oranges? Is it really so hard to for once preach about an aspect of the purple teachings that the oranges agree on.
IMVHO the officiant should be somewhat mindful of the guests of the HC that they have brought to his/her church. Ina way they are also guests of his/her church. And don't most religions/cultures have something about treating guests well while under your roof?
No, they don't need to preach about something that's outside the purple teachings. But do you really have to mention a little thing that is of no real relevance to the sermon but highly offensive to the Oranges?