Clearly you have no clue about the history of diving and tanks, and why the VIS program was instituted.
I grew up in Los Angeles in the 1960s, when the smog was horrible. The city was obscured in a thick orange haze. As a kid, my lungs hurt when I played outside. School was often cancelled because of severe smog. California eventually instituted a clean-air program with severe restrictions on car emissions. Now the air is much cleaner. You can stand in the hills above L.A. and you can see downtown. But people today are now staying stupid things like: "The air is clean! Why do we need all of these restrictive air quality standards when the air is clean? Clean air standards are a bit of a scam."
Likewise:
"The whole vis thing is a bit of a scam..."