1) Your first point is exactly why Lytro is exciting—it could disrupt photography by making it easier than ever for beginners to take good photos.
Everything you said about Lytro could be said about auto light metering, auto focus, digital cameras, lcd viewfinders, Photoshop, etc... you have a bizarre, unproductive pretentiousness. Have you had the joy of carefully metering and focusing a film camera for the pride of seeing a print days later? Does that mean we shouldn't use digital cameras?
2) Why the hell would you create an easy-to-use camera for amateurs and give it interchangeable lens? The target audience of a Lytro isn't going to shop for a 28mm f/1.4 prime. More importantly, the focal length and aperture are fixed to a specific configuration for the microlens array, and that's a constraint of these plenoptic cameras that isn't going to change for a while.
I think you've posted the perfect cover letter for why you should never be CEO of Lytro.