So basically you make a claim that french is easier to rhyme than english, then I ask you if you have any evidence and you retorqued with a condescending answer adding a link to a book you took 5 second to google and that you didn't read.
You didn't read it because I just read it and while the first sentence would make it appear to back your point, it doesn't. First because he doesn't compare french to english but merely explain how the main accent is put on the suffix of words and that, in turn, makes it easy in french to build rhyme.
And if you continue to the next page, he explains how french rhyme are not on the same level as their english counterpart "because most English rhymes involve the root rather than the inflectional ending or suffix [...]"
Bottom line, you are wrong, and you try to pass as knowledgeable. You are a fraud.