All of the "outdated" tech he compared PCs to are things that the PC itself replaced: "vacuum tube, typewriter, vinyl records, CRT". Computers used to be made of vacuum tubes and were used as typewriters. New vinyl records are still being sold today even though most people play music through a PC at home.

The main problem I have with this rediculous assertation is that all of these old technologies have been surpassed by something better that provides the same function. I have never seen anything that can replace the PC. Smart phones? Tablets? Get real. When you need to type a letter, make a phone call, listen to music and watch a movie you can do all of these things from your PC. Sure, you could watch a moive on an embedded platform (small PC) in your TV and listen to music on an embedded platform (iPod) while making a phone call on your smart phone (another device with a PC embedded in to it). The PC may change it's name and outward appearance but do not be fooled. A laptop is just as much a Personal Computer as a smart phone is. The fact remains that some day you will want to use a keyboard. Then you will wish you had a bigger screen. Next thing you know you've got a mouse plugged in to your new device and it looks a lot more like a PC than it did a second ago. (See: ASUS transformer)

Portability is great but people will use the best tool for the job. That tool will continue to be a PC as more and more people look back and think "Why did I ever give up my full sized keyboard?"