Do you think the concert should have been cancelled due to a gay person singing?
I don't know what their "code of conduct" is. If their code of conduct prevents them from letting them sing, then they have that right.
This is what I meant. Do you think it appropriate that Christian organizations prejudice against gays?
I believe I answered that question and to quote, "Are there unreasonable prejudices? Absolutely - and in every camp
and shouldn't be so"
Bigotry is immoral and hateful, and that includes judging people for their sexual orientation. Why would Christians prejudice against gays at all?
All Christian don't have irrational prejudices against homosexuals. Certainly, as I mentioned above, there should be prejudices.
Let me make it more biblical:
2 A bishop then must be blameless, the husband of one wife, vigilant, sober, of good behaviour, given to hospitality, apt to teach;
3 Not given to wine, no striker, not greedy of filthy lucre; but patient, not a brawler, not covetous;
4 One that ruleth well his own house, having his children in subjection with all gravity;
Are these judgmental? Not at all. Are they prejudices? nope. They are simply requirements for that position. If you are a "supervisor" - there are requirements. If you are a "doctor" there are requirements.
Morals like not committing fraud or lying to others, yes. But judging others for who they are? Is that moral? Is that reasonable?
I'm not sure what you are saying here. Are you saying what is moral and what isn't is determined by you or a group of certain people and if they say what is moral and what isn't, they would be correct?