Regarding the second review, frankly, I have little sympathy for its complaints about the transition between media. "Boohoo, films don't give you the time and space to follow the story and appreciate the art at your own pace. It's a travesty to art and literature!" I can't decide whether this is fanboyism gone mad or just typical bourgeois-like reaction to the violation of his sacred medium.
And I find the conjectures about the "deeper, darker signals" in the books a bit wacky and at best interesting but quite irrelevant. So that leaves the last few paragraphs. Those bring up a few points worth worrying about, but that's a rather poor review overall.
The first review complains about the animation. I guess that's a matter of taste. Frankly, I prefer Herge's drawings as well, but if someone can do better, then I guess he wouldn't be who he is, right?