I didn't read that... I heard that directly from the gentleman who runs the Alt Fuels program for WM.
As part of my DD, I have spoken to several of the leaders in the Alt Fuels industry...(including Andy, David, Nancy and Paul) which is one reason I have been short Alt Fuels for the past 3 years.
From my direct research I think WM has the best run Alt Fuels program, so projecting their numbers onto the rest of the niche is not very accurate and probably overstates any benefits.
WM is far above the average. So if the changes in fuel pricing is affecting WM's economics negatively, I/we can assume it is the same or worse for others.