I'm actually in the market for a new laptop/netbook. I was very close to purchasing a ChromeOS device as I work primarily on a desktop and have a laptop for travel but its pretty old, heavy and battery unfriendly. Then I found out I had to void the warranty to properly dual boot.
Seems like a giant fuck you to the Linux community given how much Google has benefited from Linux(ChromeOS even runs on the Linux kernel) and they put out laptops that are more locked down than your average windows laptops? Pretty disappointing.
I am assuming the write protect screws are there at the behest of Google.