First of all, good job by all those Marines, including the three women.
Second, although I do my share of questioning SOP, I'm actually okay with the fact that, currently, they won't get the infantry MOS.* The Corps made it clear up front (and, from what I understand, it is part of the reason not a lot of women are volunteering for the IOC), and they explained that the current set-up is for testing. I think it's a good thing, not a bad thing, that they are testing with real data from having enlisted and officer women Marines going through the relevant infantry qualifying training. Again, they made it clear up front how this was going to work.
**And no, the Corps did not ask my opinion or care that "I'm okay" with their decision.