That is indeed a really odd review.
I think he's drinkin' drain-o or something to make some of those comments.
MQ wasn't that bad, for what it is it's pretty good. Would I have rather had FF-V back then, sure, but what difference does it make now? It's all on the table now.
FF-IV advance might have been a little quirky but I can't say as I've had any real problems playing it?
And uh...Final Fantasy Adventure's real name is "Seiken Densetsu: Fainaru Fantaji Gaiden" which is "Holy Sword Legend, Final Fantasy Side Story" so it was indeed intended to be a Spin-off of the Final Fantasy world. I think that's why it has a Chocobo and an Airship in it, and as far as I'm aware moogles make their first appearance ever in this game. It just happens that Square decided to turn Seiken Densetsu into it's own series and dropped the references to the Final Fantasy series, except for the moogles.
If you're gonna do a write up like that, one might consider doing a few google searches to get one's facts straight. That and I don't think I'd put up stupid "Worth It / Not Worth It" slogans.
I'd simply do an unbiased review of the series for historical perspective, not "this game sucks" or "this game was alright" BS... Especially considering the wide range of fans of all games in the series.
Whatever...