It was written in different times, different audiences. (When variable names t,p,lu were the norm)

It was useful for me and many others, though I never took such (any?) advice literally (even if the author meant it)

Based on other books, discussions, advice and experience, I choose to remember (tell colleagues) it as “long(e.g. multipage) functions are bad”.

I assume CS graduates know better now, because it became common knowledge in the field.