[AnIdiotOnTheNet]

It's a criticism of the way FOSS software advocates seem to want to eat their cake and have it too. They ask the world why they aren't using more FOSS software, which has all these benefits from being free and open, and when the world replies with a list of all the downsides of relying on software written by people hacking in their spare time --see: JWZ and the CADT model-- the advocates fall back on the defense that you can't complain because it is free.

I know it sounds ridiculous, because free software is written by a diverse group of people with diverse goals, but this conversation happens all the time because its advocates often try to represent it as a cohesive whole, that it very much isn't, in pursuit of their own agenda.