Trying my best:
First, who says these types of issues weren’t addressed?
Second, It is called the Chofetz Chaim Heritage Foundation, hence it is apparent that they are purporting the halacha based on the seforim of the chofetz chaim. I would venture to say that there substantilaly less disagreements on what the chofetz chaim meant when he wrote his seforim then on the difference in opinions on tznius. (Wolfish’s example for instance, or the machlokes of shok between the Chazon Ish and the Chofetz Chaim)