Such techniques are often used to sell a conclusion with data that doesn't agree. Scaling, cropping, etc. Visuals are very powerful, and people will look at a graph and assume it's correct.
I was trying to figure out what was bothering me about it. Basically 1’0” - 5’0” is 1 tick mark part foot and then it’s 1 tick mark per inch. So basically you have a 12:1 ratio for the first 60 inches so it’s not a linear, logarithmic, exponential or any normal type of scale.