First of all, you didn't have to apologize for the accent. When a language is not your first, you speak with accent. If one doesn't understand, then that person is too ignorant for you to care about. But the reason your video is negative is the way you presented your story. Your voice is too low, and the background music makes it so hard to hear.
Obviously, you had a lot of expectation since this is an expensive car for you; you're a Honda guy. This usually sets one up for disappointment because reality would never match imagination.
When I bought my Mercedes, the salesman insisted that he should go over the car's features with me. He said he's obligated to. I insisted that we should skip it. I mean, how hard is it to learn about those features? For me, it's actually fun to figure out things myself. Plus, you're a software engineer. These things should be piece of cake. Any software engineer worth anything should be able to figure how to navigate software UI without a user guide. I don't have the M3 yet, but when I had the chance to sit in one, I figured out how to play a song within seconds. And if you're like any one of us, you probably would have learned about all the features of the car anyway. So what's the big deal? I think it was all because you brought everyone in your extended family and was expecting some sort of mini ceremony for delivery and didn't get one. If that's the case, buy a BMW and take European Delivery (youtube it). You'd get treated like a VIP. For me, it's nice to have, but it's not a deal breaker. Same thing with gaps and alignment. When my Mercedes first came out, people complained about the same thing, why the rear lights are not flush, etc. For the life of me, I didn't see it even when I tried to find it. I guess some people are more anal than the other. I see the door gap in your video. BUT. I would only see it because you pointed that out. Sure it shouldn't be like that, but unless someone is comparing two sides like you did, most of the time those things are not noticeable.