Keep in mind these comments are selected comments from the tester's logbook, not a full report. Taking them one at a time:

“The trunk is half the size of the standard Camry.”
True - The batteries have to go somewhere and the trunk is significantly smaller. I have one on order and I'm concerned about fitting the luggage if 4 of us go away for a week. It's a valid comment.

“Quite impressive acceleration, but you must push the accelerator to get it. The pedal feels very heavy and has long travel, which may help MPG, but makes it feel sluggish to drive.”
I only look at this as a negative if the pedal requires such a hard push that your leg will get tired. If this is not the case the first three words are hardly a negative.

“The navigation system is easy to program by the touch screen, but the voice-recognition system can't compare to the one in the [Infiniti] M35 (available to ConsumerReports.org subscribers only) . The Camry’s has an awkward help menu, poor ability to discern place names (how does ‘Connecticut’ sound like ‘Alberta’?), and oddly says, ‘Please retry continuously' when you need to fix an error.”
There is a large difference in the user-friendliness of NAV systems, and it's possible that Toyota screwed up on this one. Sorry to sound self centered, but my TCH doesn't have the NAV system so this doesn't concern me.

“Does Toyota make any money on this car?”
Unless I'm wrong (doubt it) this comment is stating "you get a boatload of car for the money". Nothing wrong with that.

“Technically impressive. But I like the normal Camry much more (not to mention the Honda Accord).”
For this person's use the normal Camry is preferred. Maybe he needs a large trunk. Or maybe he does all highway driving where the TCH's advantage is not as great. Regardless, only you can decide whether the TCH is right for you by plunking your read behind the wheel and comparing the different options available.

Keep in mind that most people are not buying this simply for financial reasons (myself included). A Camry CE or LE would sticker for $4K - $6K less, and I wouldn't be paying MSRP. So even with the tax credit it will take years to pay for itself. I'm buying it because I'd like to not be wasting so much fuel (our current family car is a V8 Explorer) and because I'm a techno-geek (there, I admitted it). For me, the small trunk, long pedal throw, etc. are small prices to pay for this car. If my interest was strictly financial I'd pick up a 1 year old Taurus with 25,000 miles from Hertz auto sales for under $11,000. That difference in price would pay for a lot of gas.