I don't know how Frank presented the old Mothers, since I never read the book. There might be some opinions on what he said, but I - or anyone else - could not make any corrections to anything Frank did. ↗
The Internet is a big place where a lot of people can voice their opinions, and my mother chooses to pick fights with random people from all over the world who don't have the nicest things to say about me. ↗
What is in question is a kind of book reviewing which seems to be more and more popular: the loose putting down of opinions as though they were facts, and the treating of facts as though they were opinions. ↗