It says that the errors made in the prelogy ARE what makes the prelogy interesting.
Here is the summary :If the prelogy accumulates errors and mistakes of taste, it is nevertheless exciting in what it tells once it has been sorted. At a time when Disney shamelessly capitalizes on the franchise and seems determined to prolong it ad nauseam without really digging the heart of his subject and always using the same strings, Lucas had made us an original proposal and highly subversive. To criticize both the system he created himself and the world in which we all live by using something universal and winning the support of everyone to convey an important message.
Ridiculous.