That paragraph sounds awful. No, I don't think that. I'll be lazy and point to John Scalzi I guess: http://whatever.scalzi.com/2012/05/15/straight-white-male-the-lowest-difficulty-setting-there-is/
I don't think that individual advice is useless. I'm skeptical that certain people are giving useful advice. Useful here involves a criterion of novelty. Giving someone advice they have heard 1000 times is not helpful. I guess necessary but not sufficient is a good description of personal effort in this context.
Working three jobs doesn't leave a lot of time to get educated and then use that education to post large amounts of philosophical text on a Reddit like rationalist site. And being poor and black in the real world isn't the optimal condition for creating meat space walled gardens.
As far as individual action, its my opinion that individual charity is helpful but not sufficient. And often comes with coercion I don't approve of. Religious charity would be a good example here. Strings attached? More like ropes.
For the second thing you quoted, I wouldn't say that I am the most productive person in helping the less fortunate. Although that's somewhat for psychological and/or financial reasons. This is orthogonal to the efficacy of certain strategies to promote social change. Just because I don't turn on the faucet doesn't mean that if I did water wouldn't come out.
I think that the answer to this problem is that it will simply be neccesary for class oppression to be ended then.
Scott, known on LessWrong as Yvain, recently wrote a post complaining about an inaccurate rape statistic.
Arthur Chu, who is notable for winning money on Jeopardy recently, argued against Scott's stance that we should be honest in arguments in a comment thread on Jeff Kaufman's Facebook profile, which can be read here.
Scott just responded here, with a number of points relevant to the topic of rationalist communities.
I am interested in what LW thinks of this.
Obviously, at some point being polite in our arguments is silly. I'd be interested in people's opinions of how dire the real world consequences have to be before it's worthwhile debating dishonestly.