Windshield glass haze

The front glass and the rear glass appear to be about the same. I viewed the video link above, sent by 75slant6, and started that procedure with some success. I didn't have a "magic eraser" at the time to tackle step two, but rubbing alcohol on a micro-fiber towel got through some build-up on the inside. My feeling now is that the issue has been, crap building up for 50 years. I'll complete the process this weekend...then I'll know