I had a problem with Kong on so many levels. spoilers so don't read if you havent seen...
1. Fout T-rexs can't possibly live on the top of a mountain with sheer sides.
2. one or two T-rexs would have been a fun fight four is silly and fighting swinging from vines is silly.
3. The stampede scene was cartoonish
4. The handgun the black character used in the movie wasn't actually being made until the 1970s
5. You can't shoot giant bugs off a person with a thompson sub machine gun set on full auto
6. The raptors after the stampede had a valley full of dead dinosaurs and people to eat but they keep chasing the characters
7. The woman successfully teaches Kong sign language. Ok she just teaches him one sign but in reality it takes months of work to do that with a gorilla.
8 There is so much other silly nonsense it just ruined the whole movie and I don't feel like typing it all up. If you want to suspend disbelief don't be silly try to make it conform somewhat to actual physical laws.
That didn't bother me at all (there's more...how did they get Kong on that boat?) because the premise is really just as silly. It's just entertainment. I mean, gorilla's don't fall for pretty girls. So why expect any of it to fit reality very closely. I just thought it was a great piece of fiction.
I like how everying that walks, crawls, creeps, or flies is gigantic, toothy, and rabid. Except for things in the river. No giant pirhanha, gar, snapping turtles, or prehistoric crocodiles inhabit the waters that Ann and Jack swim through to escape Kong.
Well, if you want to get picky, there's no way Ann Darrow could have been tossed and juggled around like she was in some of the fight scenes without dislocating a shoulder or more likely, breaking her back. Yet, she was fine.
It's just a movie. As long as characters behave basically credibly, I don't mind departures from science and physics now and then. As long as the characters are good and behave like normal people (even in extraordinary circumstances), I'm fine with it.
Contrast that with Traffic a few years back, which was the darling of critics at the time. In that film you had a pampered, pregnant euro-housewife go from enjoying an expensive lunch with her rich girlfriends in the first reel to talking trash/showing who is boss to murderous drug dealers in the next-to-last reel. Bogus. Stuff like that hampers my enjoyment of a film - stuff that you mention seldom does.
9. What the hell happens to the tribesmen after the initial encounter? Did they kill them all off?