I'm not sure what the units are there in that graph, but when trying to scale the vertical and horizontal of the graph to have 1 unit vs 1 unit, it seems to have a larger looking slope to me. Still smaller than one though.
The X and Y axes do not have the same units, so scaling them this way is meaningless. The key point is that while there line has slope, the spread of the data is much larger.
I.e., the ideology of the study's author gives you very little information about the numerical values in the study.
I may have made mistakes in resizing it though.