"To fully understand the quality of your specified page, the system may follow other links on the page."
It seems, that it is for calculating QS on domain level.
Imagine 2 situation, if landing page (i.e. subcategory in shop) has:
1. no follow on all links
2. page in ajax, so mainly most of links are java-script which reload only small part of site.
What do do with such situation? My opinion.
ad 1.
Don't worry, no follow does not concern AdWords.
ad 2.
add link for example in the footer to static pages, like: superior category, and all subcategories.
Do you have any experience in this field?