I don't think that's the problem here, as I don't want to see porn on e.g. Mozilla's forums either. There's a place and time for that content and Mozilla should

I don't think that's the problem here, as I don't want to see porn on e.g. Mozilla's forums either. There's a place and time for that content and Mozilla shouldn't be the one to decide for others. The problem is whether Firefox is a Mozilla "service" or not, and the way the terms is linked implies that it is.