I'm going to give my take on this by sharing a personal story.
When the war in Afg was quite intense and we were losing a lot of fine men and women, I lost a close friend and comrade. The next day I was in my legion lounge when this death came up in conversation. Before I could say anything about it, a RCAF veteran who had served briefly in the 60's, turned to me, smiled, and said, "That's OK, it's only another pickley". I think that he thought he was making a joke, and that the only thing that saved this tool was that I was so shocked and gobsmacked that someone would say this to my face at this moment that I just sat in stunned silence. I left before I wound up beating this asshole to death. Needless to say, there was no love lost between us in the ensuing years.
A few years later, I wound up being president of my legion. Being president of a legion, you wind up attending, and officiating, a lot of funerals or memorials of veterans and Legion members (giving the act of remembrance, Legion prayer etc...). You might have six in a month, you might have none for six months, it varies of course. I was in my second term as prez when this asshole's number came up.
I was tempted to pawn this off on the past prez or one of my vice prez's, but after some consideration, I realized where my duties lay. Though he was a huge waste of oxygen in my personal opinion, he did serve, however briefly, and this fact alone earned him the best and most respectfull send off we could give him. So I did my best by him. These rites and ceremonies are really for the benefit of the deceased's loved ones. It is they that receive comfort from them.
After having a few wobbly pops after the ceremony, and listening to friends and family going on and on about what a great guy he was (as friend and family tend to do), practically nominating him for sainthood, I decided to take my leave before my lips began to slip.
My point is, that personal opinions and political points of view should not be a factor in anyone's qualifications for a veteran's funeral, or flags at half staff, or any other entitlement.
My two shekels