2. It's ugly, especially in a G movie. That deserves a WTF right there.
G-ratings didn't used to mean completely kid-friendly or violence-free. The first three PLANET OF THE APES movies were all rated G, despite plenty of brutality: humans being hunted for sport, lobotomies, talk of gelding, a veritable bloodbath at the end of BENEATH, culminating in the total destruction of all life on Earth; Zira and Cornelius being tragically gunned down at the end of ESCAPE, "Damn you all to Hell!," etc.
And those weren't too many years before TMP.