I think the Mises quotes are not relevant here. The way I see the OP’s question, it’s this:
Many people have won Darwin awards who would rather not have gained that prize.
Also, many people are retarded, literally, or have very very low intelligence.
In other words, there are plenty of folk incompetent to find a means that will give them the ends they chose for themselves.
Don’t these people need a wise loving leader to guide them through the pitfalls of life?
All Mises wrote was that these tragic figures do their best, as they see it. But he did not discuss the question of do they need help to acheive their own ends, and should we give it to them?
It’s a moral question. But let’s agree with the warm hearted folks who think we should help the helpless. Now the question becomes who can we trust to help the helpless, as opposed to helping themselves at the expense of the helpless?
Historically, the people who usually help someone most are his family, if he is lucky enough to be born into a good one. Volunteers are sometimes good helpers, including charities and spiritual organizations [although they too have thier pedophiles and so forth]. But at least some of them actually helped the unfortunate. Mother Teresa seems to be a case in point.
But there are two types that seems totally unqualified to help anyone, the politician and the govt bureaucrat. If we consider that 90% of the money spent on welfare goes to the govt workers involved, and 10% to poor people, that should give us pause. If we look at the state of govt endeavors in any field, such as the post office, FEMA, Homeland Security, the TSA, the military, and the lawmakers, we see mind boggling incompetence and casual cruelty at every level. Lewrockwell.com makes its living documenting as much as they can of this, which is a drop in the bucket of the totality.
Where would you rather raise your child, at home, or in a govt foster home? When you grow old, where would you rather spend your last days, with family or in a govt nursing home?