as a chromebook user, i find this article disappointing. what it really summed up to was flash is not working well -> chrome os is doomed, instead of maybe chromebooks need a hardware boost. By that theory iphones/ipads are worse because flash doesn't work at all.
I will also say that i have found flash to be working better on the device as the upgrades have progressed.
The biggest flaw with chrome os has been google not educating users on new features as they come out. for instance the average user has no idea that they can open apps in panels.