Hello :)
My husband was horrifically injured during operations in Iraq. It's something he, I and our family live with every day. My DH would hate to be heroicised or pitied for his injuries. As you've said, it was his choice to sign up.
I just wanted to point out a couple of things though:
When you are commissioned to serve your country, you can't pick your battles. My husband was injured in Iraq fighting for a cause he didn't support and in a war of dubious lawfulness. He is furious with Tony Blair for his decisions at that time and is vocal about that. For many people like my DH it is hard to come to terms with the fact that he fought and was injured under those circumstances. So yes, people sign up out of choice, but times change and many years later, you can be sent somewhere you hadn't considered - and saying no is a military crime - not following orders is an offence against the Queen, effectively treason, and punishable as such.
I understand that some people choose not to wear poppies, or don't want to remember on 11/11. Everyone has charities that feel more or less relevant to them. But it means such a lot to my DH when he sees a town centre stop, just for a couple of minutes, and remember the horrors of war with him. It's not glamourising or celebrating war. It's not a political thing, to me. It's just a chance to acknowledge the awfulness and in some way, i think it allows normal life to seem a little bit less trivial, the rest of the time. Walking down the high street can be tough for my DH sometimes. But for a few days after 11/11, it seems a little bit less unfriendly and he feels just a little bit less isolated. I am grateful to the people who attend those ceremonies. Thank you OP and the others who did that today :)
To those people who think it's up to the government, not charity, to look after injured service personnel: I agree. However, the Royal British Legion and Help for Heroes have helped in ways that are beyond monetary. Through them, our family went on a respite holiday in a RBL 'hotel', and we might be getting a support dog to help DH be more confident and mobile. I can't wait! Those are additional things that have made such a difference to our lives, but I wouldn't want them to be taken out of the taxpayers' pot when there are so many other things to pay for - schools, hospitals etc.
I'm not sure if I have worded this well - sorry for the long post. OP I think your DH is entitled to not want to remember on 11/11, but perhaps he just needs to inform himself better so that his arguments are less 'black and white'.