Worth noting that libertarians on Less Wrong tend to be libertarians because they think free markets produce more utility without government intervention-- not because they believe a story about taxation being unjustified coercion or wealth redistribution being theft. There is nothing necessarily hypocritical about thinking that wealth shouldn't be redistributed but social status should.

Though I suspect there are pro-free market arguments that would cross apply.

The world does not owe you a social living.

True, it also isn't entitled to stop us from trying to acquire one by imposing arbitrary rules.

Edit: I could equally well turn the question around and ask why liberals aren't trying to make social livings more fair.

While I agree with your fundamental point, you seem too be confusing libertarian political philosophy with libertine ethics.