This is a linkpost for http://curi.us/2065-open-letter-to-machine-intelligence-research-institute
I am not worried. However taking positions viewed as extremist by the mainstream (aka the normies) has consequences. Often you are shunned and become an outcast -- and being an outcast doesn't help with extinguishing the fire. There are also moral issues -- can you stand passively and just watch? If you can, does that make you complicit? If you can't, you are transitioning from a preacher into a revolutionary and that's an interesting transition.
The quotes above don't sound like they could be usefully labeled "true" or "not true" -- they smell like ranting and for this genre you need to identify the smaller (and less exciting) core claims and define the terms: e.g. what is a "mental cripple" and by which criteria would we classify people as such or not?
Oh, and I would also venture a guess that neither you nor curi have children.
I don't talk about my own family publicly, but from what I can tell roughly half my fans are parents (at least the more involved ones, all of whom like TCS to some degree. I can't speak about lurkers.) Historically, the large majority of TCS fans were parents b/c it's a parenting philosophy (so it interested parents who wanted to be nicer to their children, be more rational, stop fighting, etc), but this dropped as non-parents liked my non-parenting philosophy writing and transitioned to the parenting stuff (the same thing happens with non-parent fans of D...