While much in design is arguably taste, I think he very brilliantly articulates a number of different design issues and concepts. Several offhand observations really clarifies things for me (like why I was unhappy with a certain area).
Where we read his essays?
I have a little book by him, from which I gleaned the "aha" that the first landscaping question is always "what do you want to achieve?" I was a little turned off by the introduction, which is written by his partner. Note to aspiring authors: do not get someone who is madly in love with you to write your introductions.
But other than this I agree with your assessments.
HA! Yes, my eyes crossed and I skipped most of that part. There was no attribution there, either--not a place was there and acknowledgement of WHO was writing the intro. You just had to figure it out.
It really clarified why I hate my veggie garden. I already knew, really, but it kinda gave me the kick in the pants to FIX it. I was so stuck on my first idea that I just let it sit there, empty and awful, rather than do anything about it.