Greenpeace has been targeting non-sustainable practices in biofuel production - and the ill thought out legislation that led to this for at least the last 10 years, so it is factually incorrect to say that they have been 'staying silent'.

Palm oil for biofuel/heating constitutes 55% of palm oil imports, but food and feedstock usage accounts for 40-45%, so it's still a significant area of use

Understandably a campaign in this particular area is going to be more visible to the end consumer because of the companies that it targets.

And everything is political.