part of the problem is videos on television and youtube, etc. on 'top shot' they would show contestants shooting glass jugs filled with colored liquids. they would playback, showing very exciting explosions with glass and liquids flying everywhere. they would show shooting glass plates which would also disintegrate throwing shards of glass everywhere. the 'top shot' folks may have tried to clean up the mess, but I kinda doubt they get it all.
I have watched youtube videos of people blowin' stuff up with tannerite. one was a huge, rear projection television blown to smithereens with tannerite. yeah, it looked cool and exciting, but a FBI forensics team would have a hard time cleaning up the mess. you get folks seeing all this cool lookin' stuff going on, and they just gotta try it. then after they scatter their old CRT monitor all over creation, they see how much effort will be needed to clean up, so they blow it off. they are frequently out in the boonies, and without witnesses, they can get away with it.
it all boils down to personal responsibility, which is lacking nowdays.
I have my own personal range. I admit, I do not police my .22LR brass, but everything else is cleaned up. and I never, ever, allow any glass to be shot on my range. the closest would be the biodegradable clay targets.