Youtube data becomes corrupted !!

I was reading a forum in CNET regarding the signature errors arise while browsing. I come up to read this hint by a CNET user..(Dango).
Read this...is it true ???

By Dango:
Data becomes corrupt. I viewed this video over six months ago it was crystal clear, nearly high definition. (yes, I realize some shots where made with a frosted lenses. See the musician while sitting and singing in the studio, even here the image quality has begun to regrade. Also note the introductory screen with production data posted on it.)

http://www.youtube.com/watch?v=PBmAUlF7Woo&feature=channel_page

This video has been viewed now over 2,000,000 times and has become fuzzy. 2,000,000 more views and it may not be clearly visible at all. I believe the cause is hardware memory leakage. YouTube has millions of these gradually degrading video files. Each pass through the hardware make them worse. Those that are viewed the most are the most effected. All of them go through various scans periodically so all will become corrupted over time. Try it for yourself, find a new popular video and check back on it from time to time.

Guys suggest whether its true or not..