From the article:
"The new policies stem from a handful of unfortunate and uninformed interactions, some of which have been unkind to students, others that have disrespected our counselors. The vast majority of our parents, of course, work to support and honor all of our students and staff. "
It’s a fallacy to conclude from this article that most parents at the school behave badly, that wealthy people = unpleasant parents with unreasonable expectations.