I'm in the middle too...I disagree with some of what GP says, particularly about clipless pedals, clothing, anti-racing stance, CF and pretty much anything critical of other cyclists. I think he tends to exaggerate his presentation and is not the best at diplomacy.
On the other side, I love his bikes, I think often times a steel bike with tire clearance and eyelets for fenders/racks is most practical for many riders, I like his advocacy "just ride" approach, which goes against his own products and I really like his approach to practical weekend touring. Most shops didn't carry Brooks saddles for a 15 year stretch...but GP did. Does GP have a lot to ad to the hobby? Yes...he does. I'm glad he's around. Is he going to influence my decisions on cycling? Not so much.