Ask HN:OS Considered Harmful?

http://www.colorforth.com/cf.htm

Chuck Moore characterizes modern software as "shameful." He writes "...an operating system is no longer necessary, if it ever was." Elsewhere on his site he claims:

"There is no need to manage multiple threads or page virtual memory. Classic operating-system functions are obsolete. They've become the problem, not the solution."

Ignore his assertion that any particular language, such as colorforth, can supplant the OS. Instead I ask if anyone agrees that the OS as currently conceived is obsolete, solving, at best, yesterday's problem, and at worst, not solving it?

What does a post-OS world look like? Is there anyone out there qualified to answer these questions?