Do I believe the GNU project, the GNU licence and the related software has done good for society? Yes, I do.
Do I believe the Free Software Foundation has done more good than harm in getting the idea of free software (free as in freedom, not free as in beer) out in society? Yes, I do.
Do I believe every act by any representative of the GNU project or the Free Software Foundation is good? Of course I don't, they are people with their own ideas which do not necessarily always agree with mine.
So, Free Software for the win, it will take time but it has in many ways happened already and will continue to do so.
The more software is integrated in hardware which used to be free of such - tractors, cars, household appliances, etc. - the more important the freedoms proposed by the Free Software Foundation are. The more intrusive surveillance by government and commercial entities becomes, the more important it is to have access to free alternatives which do not report back to their 'Owners'. Free software plus the right to repair are essential to keep society out of the grip of commercial entities who first and foremost are beholden to their bottom line, second and increasingly so to some ideology and/or political party.