Chrome books are sold to run Chrome and only Chrome so that's not an issue because they are not sold as if they were a personal computer. So right there your question as to an issue is that there is no issue.
If you want to get a Personal Computer to load an OS, you get that!
I bought a new series 7 chronos the other day and I want to create a 1-2 hundred gig partition to run Linux. I have heard on these machines it will brick the computer though. Is this still an issue or has it been corrected?