No. That is definitely NOT all that matters. What matters EQUALLY is whether or not this airman and his husband received the honors due at this event.
The problem with you "Christian" types is that you think that you are the only ones who count and deserve special rules.
That said, to which sect/denomination does this guy belong? Not all Christians are into this sort of thing, and use of the generic term "Christian" makes it appear to the public that all adherents of the Christian faith would endorse this sort of behavior.
What I find most disturbing is that this guy was a commander and then general. Should we now worry that people placed in high-level vital military jobs will subordinate the conduct of their official duties to the dictates of whatever religion they happen to be? The idea that every service member has a Constitutional right to refuse to do something s/he doesn't want to do opens up a whole new can of worms.
And I remember the days that conscientious objects were jailed or forced to flee to Canadia, and this was back in the days when people were involuntarily conscripted. No one mollycoddled them.
This is a reason we can’t have these religious accommodation laws
It goes beyond participation in a wedding
Beyond refusal to provide anything that can be used in that wedding
Now, we have an Airforce official refusing to acknowledge the contributions and accomplishments of a person just because they are in a same sex marriage