Just investing in Internet.org with FB ads in mind is not at all good for the community. We go to internet for utilities not for seeing ads.
Mark Zuckerberg gives lip service to the idea of net neutrality and says he supports unrestricted access to the free and open Internet, then turns around and does the opposite. The EFF and other organizations have taken the company to task for this devious bait and switch move. I have no idea whether this has had any effect but given FB's track record I suspect not.
The best thing you can do is ditch Facebook and explain to others why they might want to consider doing the same. Personally, I get very little value out of the platform and although I do have a FB account I login only three or four times a year.