“Why does anyone think this is so? ”
Ive asked this question a few times.
“Surely nobody believes it is laziness or that they are “busy”.”
I wouldnt be so sure. Here are the responses IVe gotten:
“rav chaim has sedorim back to back, so no, he never went through this topic which is תלוי in a lot of things that are not בין כותלי הביהמ”ד]”
and
“simply because since he from the Gedoei Hador and has real limited time…..”
and
“he is not going to spend his time on it.”