Hello HiTech,
Your extremely distorted riff doesn't have any dynamic range and doesn't have any highs. Its clipping causes it to be compressed and it cuts frequencies above about only 500Hz. If it was wideband then it would blow your ears off.
Undistorted music has a wide dynamic range. Its amplifier reaches max power only occasionally. The high frequencies are at a low level and can be seen by the fragile nature of tweeters, and the fact that amplifier clipping destroys them.
Your "fuzz" is many added high level high frequency harmonics. Sure they will destroy tweeters and your hearing.