The so-called "fishbowl effect" you're referencing here is a limitation of the paralax barrier technology, not a quality, you do realize that?
The screen is capable of reproducing any kind of 3D effect, the parallax barrier enables the screen to project two separate images to each eye, that's it.
There are plenty of photos, videos and games where pop out 3D happens, in Zelda you can make Links deku stick stick out 1-2 inches or so and in Mighty Switch Force there are particles and effects jumping out of the screen making the game rally pop visually. Also in Kid Icarus Pit is flying slightly outside the screen.
You can take a finger or a stylus to sort of compare and it's like poking a hologram. I suggest looking up some 3D images and try it out.
The fishbowl effect isn't a limitation of the screen, the screen uses the exact same principles as every other 3D technology out there.
A barrier is just another mean to project the left and right image correctly, it's impossible to have any limitations since that's all there is to it. This is how every 3D device works, whether it's a barrier directing light, polarizers or shutter glasses.
It's all the same, do some research and you'll realize how stupid it is to say that it isn't capable of pop-out.
The effect he is referring to isn't if stuff pop out or not, it's related to the depth of the actual game models themselves.
Many 3D Movies are filmed with camera lenses parallel to each other which is why actors look like cardboard cut outs on different layers, however in stereoscopic 3D games the in game camera have the cameras slightly angled giving object more depth. Just like how our eyes work, if you put your index finger in front of your nose you'll see a little bit of the sides of your finger with each eye and not just the part facing you as you would watching it with one eye only.
In this example there's two pairs of 3D cameras, one with parallel lenses and one with slightly angled ones.
With camera A the sphere would look like a flat circle placed in a 3D room while with camera B you actually see the depth of the object itself.
I learned this while screwing around with in game cameras in PC games using iZ3D. I can't remember what this was called but the angle of the lenses really makes a difference.
Bottom line, the 3DS screen is just as capable as everything else 3D, only in a smaller format of course which is perhaps why you don't find it particularly impressive.