I am completely sympathetic and supportive of reforms within capitalism to mitigate the more egregious oppression and exploitation of women, racial minorities, immigrants, LGBTs, and other systemically screwed groups. I vote, I protest, and I do what I can within the system to mitigate the worst effects of oppression.
But it's important to understand that reformism can at best mitigate only the very worst effects of exploitation and oppression, and even then only partially. The bourgeoisie in a capitalist society always select some easily identified group for hyper-exploitation. If it's not blacks, it'll be immigrants, or Muslims, or short people, or people with trivial genetic disorders, but it will always be someone. And, given the persistence and virulence of misogyny and racism within the United States, women and racial minorities don't have much of a chance. And the women within Islam are completely and irredeemably screwed without revolutionary change.
You do have to treat the symptoms, if only to buy time. But at some point you have to step back and treat the cause of the disease. And imperialistic capitalism (the last ruling/ruled political-economic system) is the cause of the diseases of racism and misogyny.
Update: Let me be more specific: so long as you have an economic basis of exploitation and oppression, you will have political and social exploitation and oppression. It's possible, perhaps, to completely eliminate the oppression and hyper-exploitation of specifically women, but only at the cost of finding some other group to systemically oppress. You cannot eliminate all exploitation without eliminating economic exploitation.
Sure. Treat the more egregious symptoms. No argument there. But that's what we've been doing, with some success... but the success has been faltering in the last 20 years. It's time to take the fight to the next level, to not just ameliorate but eliminate misogyny and racism; indeed to eliminate all forms of oppression.
Update: I also want to restate a point from the original article. Fundamentally, bourgeois reformism can at best achieve equal access to the bourgeoisie for various marginalized groups. But the bourgeoisie can comprise only about 10% of the population: 90% of any marginalized group will still be oppressed.