Hmm, my interpretation of this line is different.
From the CoC: "Discrimination (unless required by law), particularly against marginalized and otherwise underrepresented groups. Targeted outreach to such groups is allowed and encouraged."
I break that down as thus, and again, I speak for myself, not the committee or anyone else involved in the drafting of the CoC.
Discrimination - intentionally preventing a person or group from participating based up on characteristics such as age, gender, sex, religion - is unacceptable behavior under the Code of Conduct.
I can't create a program within our technical community with the purpose of excluding a group, especially when that group is underrepresented. However, outreach to groups that are marginalized is welcome, as it is not discrimination. It's an attempt at equality.
GSoC, which you keep bringing up, does not set out in its goals to omit participation from a particular group based upon characteristics they may embody.
If the fictional Santo Marco MediaWiki user group hosted a program for local Santo Marcoians school children to attend, it's not discrimination if I'm not from Santo Marco or a child in school. Now, I could move to Santo Marco, but at the age of 36 I doubt I'd pass as a 5th grader.
Now, the same could apply to your consideration of GSoC as being discriminatory. While I'm not in college, I could be. Anyone could be who meets the criteria for entering secondary education.
Also, if it was so obvious that the GSoC program discriminates then we would find folks in outrage that Google - of all organizations - would be running a discriminatory program. They're not. I, uh, Googled it. :)
As for what is or isn't considered a marginalized group - that is left to the committee to discuss and decide. However, discussions such as the past one during the drafting phase and this one can help to inform that decision making process. Using a little bit of logic and research I would assume that folks on the committee would be able to do determine during the investigation of reports of violation of the Code of Conduct that distinction. If you think they can't - that's for another discussion outside the scope of the FAQ.
At this point it feels like your question boils down to "Are the committee members smart enough to figure out if women are underrepresented or if a program is discriminatory?". Spoiler alert: women are underrepresented and marginalized. Discrimination is everywhere. They can figure it out. We have some whip-smart folks in our community who I wager will be a part of the committee.
I think it's pretty clear to distinguish between a marginalized group and one that is not. Even if as we (technical spaces, but society as a whole) strive to make that list shorter and things more equal.
I'm a straight white dude. It's pretty much anyone who isn't like me that falls into the area of concern. :)
Our goals as a small sliver of the Wikimedia movement should be move the needle in participation from marginalized and underrepresented groups from the piss poor state it's in now to one where we have more diverse voices participating. One way of doing that? A Code of Conduct that prevents jerks from discriminating against folks.
You're a smart guy Yaron. I'm sorry if there's understanding here that escapes you. I don't have any idea how I can make it more clear. I'm honestly trying. Please assume good faith. I respect your work in the community and appreciate your participation as a colleague in these challenging conversations.
Since we're straying a bit off of the discussion for the FAQ, might I suggest we carry this conversation somewhere else? If you'd like to continue, perhaps either of our Talk pages would be better suited? Happy to oblige if you agree.