It seems like you are implying that someone who works for the military cannot be religious or have morals. But even if your religious beliefs or morals prevent you from working for the military, surely you must recognize that there many people whose morals and religious beliefs do not conflict with military service. And that’s not being disingenuous, that’s just having a different point of view.
Couple that with a grinning photo of him sitting on top of an industrially-produced cannon-type weapon in that same video just made me uneasy. The end of every video on that channel has a bible verse citation so it's especially mind boggling. Isn't the fifth commandment "do not kill"? I believe if you're a religious person working in weapons development and choose to compartmentalize your beliefs for a paycheck then you are either naive or malicious, I don't know which is worse.
I see this a lot where people try to use christians’ beliefs against them to try pigeonhole them into thinking and acting a certain way, or call them hypocrites for not acting the way they believe christians should act. But religion is open to many different interpretations - just look at the number sects within every religion - and we shouldn’t really assume anything about a person’s beliefs just because they are “religious”.