When there is such a diverse group of people as the FGC, there is bound to be a wide array of different and often contrasting opinions; hell, it's the same way for pretty much any group of people who gather around one specific hobby or activity. That, sorry to say, is the way things are; take pretty much any group other than the FGC and it can be divided into numerous subgroups that are in stark opposition to one another on various subjects. For example, within the Starcraft II community (and I am only using it as an example because it seems to be brought up more than any other, but it is doubtless that one could easily find examples in baseball, football, etc.) I have no doubts that various members disagree on issues that they take very seriously; one might (and probably will) find groups who are pro-X and groups who are anti-X as well as people who are Y-ist and people who loathe Y-ism, but the larger group should not be the podium from which one voices these opinions.
The problem with this whole Aris case is that he did just that--he voiced a very controversial point of view in a place where it shouldn't be voiced and acted in a way that he shouldn't have. If he wants to act in such a manner around a slightly more homogeneous group who wouldn't take deep offense to it, it wouldn't be an issue. It's really difficult to change the way in which a person thinks, and I don't think the FGC is the right venue to attempt to do so from anyways, but the way in which one acts is far more controllable. Aris, however, brought his views into the public spectrum and made it an issue. Keep non-FG related affairs (religion, politics, ideologies) out of the spotlight and there won't be a problem. If someone can't do that and is a source of animosity and internal strife because of it, they should be reprimanded and/or penalized as is fair (what this might consist of, however, I'm not sure about). If the FGC is unable to do this, I seriously doubt that it will be able to grow as much as it could and it might lose some of the diversity that it prides itself upon because it will become less about playing and the community as a whole and more about politics and cliques.
Maybe trying to keep Aris off of the stage & commentary for a little while until he proves that he can act with a bit more tact would be best; I don't know.