They no longer say anything like that, which supports my point.

The argument that the fossil fuel industry historically being a major source of their funding is why they currently oppose renewables is weak because that has been a major continuing source of their funding for many decades.

Hence to explain why the renewable support in the 2008 party platform went away we need to look for an explanation other than simply the fossil fuel industry wanted it.

It still may be due to the fossil fuel industry, but to make that argument one needs to explain why they didn't have enough power before to stop it from going into the platform in 2008 but they did have enough later to get rid of it.