Before you judge how he has portrayed Faramir watch the Extended Edition of the Two Towers. You will have to wait a few months, but all will be explained...I know this for a fact!
But not only that, why don't people like the Faramir in the film? He does what it says in the book, he deceives Frodo to catch Gollum, he blindfolds them to take them to the hideout, he interrogates them etc etc.
On to the point of Tolkien vs Jackson. It isn't really a matter of the versus because Jackson has followed Tolkien as much as possible. I mean even Eomer's helm which he wears in The Two Towers says around it:
This helm belongs to Eomer son of Eomund
It has it in Rohirric. All the little details specifically when it came to Tolkien describing them, are added even though you may not notice it. I have read the books what must be about 15 or 16 times now and I am not dissapointed in any of the films which have been released so far.
I would say that Tolkien would be proud of what Jackson has done...he has converted the best Fantasy book ever written into a movie that not only works, but are absolutely amazing to watch.