Because the sources of the antiship missiles are not relevant to the antiship missiles?
Because this is a discussion. The author presented the argument in away like:
Based on his research -> his conclusion is so forth.
You can disagree with his conclusion if you want, but he is allowed to reach his own conclusions. And it's up to the website whether he has done enough research and they obviously believe he has. Our goal is to debate his conclusions and other conclusions. I can assure you that there are a lot of news services out there reporting on PLAN news who have done far less research than he has here. I know this because they either get very basic facts wrong (like Jane defense) or rely mostly on interviews.
Also, the other thing you might have noticed is that I'm making an effort to clamp down on debates involving two sides that are not willing to budge at all on their views. Let's try to have it as state your view a couple of times and let it go.