If you say so. I'm on windows and most of my memory is going to chrome and firefox.
I've had some pretty severe issues with a chromebook running out of memory because the devs decided swap wasn't allowed (and I could never get the kernel to build and install properly). The builtin chrome definitely doesn't stop single websites from using most of a gigabyte of RAM.
I recently got a Chromebook and I'm amazed at how snappy and fast it is. And its built in Linux is amazing.