You know how this is going to go
A few paid Steiner employees are going to arrive and give it the hard sell
A few experienced families are going to put across their experiences that it is a brain washing, racist cult where children are considered to have a "guardian angel" which allows them to be punished as much as they deserve, so teachers shouldn't interfere with natural healthy bullying, where children who are weak will die off and be reincarnated, so don't bother with any evil artificial medicine, where disabled children have had their disabilities caused by the moral weakness of the parents, where the best souls are reincarnated white, so being any of the lesser colours indicates a fault in your soul, where you are expected to pray to gnomes, and where the whole philosophy is so bat shit crazy that the first question a teacher may be asked on applying for a job is "are you psychic? we only employ psychics"
then MN will be threatened with legal action, and any detrimental posts, such as this one, will be pulled
and a little while later someone will ask again, and the whole hard sell/ personal experience/ legal threat/ deletions cycle will happen again.
maybe though, the simpliest answer to your question is their assertion that they never supported nazi race science in 1930s Germany is very hard to disprove, when they control so much of the evidence themselves, and some Steiner schools still teach it.
Maybe look at some of the forums offering support to Steiner survivors?