Oh, They Are Ever So Wrong
Rockefeller family members want Exxon-Mobil to move beyond oil and do all kinds of things that the company does not know how to do simply because these things are politically correct.
See article in today's NYTimes. See also unflattering photo of two Rockefellers at top of article.
If indeed the age oil is ending (a dubious assumption), Exxon-Mobil should accept this without complaining and gradually liquidate the company and return the money to the stockholders and allow them to invest the money as they see fit.
What Exxon-Mobil should definitely not do is to squander stockholders' money in areas in which the company has no knowledge or assets. They have tried that in the past and failed miserably.