Par for the course for IT/Sysadmin type jobs. "We expect you to build the hospital while running the emergency room and operating room." They are just being up front about it. There are a few areas where they glossed over it. I will translate:
"You need to have a crazy-person level of attention to detail" - We will judge you based on anything you've overlooked, rather than what you've done.
"A motivated self-starter who can overcome or workaround issues independently" - Don't bother telling us we are asking for something impossible, that's your problem.
"Flexibility to travel up to 30% of the time." - Not only should you be able to do four jobs, but you should be able to do them from an airplane/car/hotel room with permanent availability.
"Should have no problems working in a creative and potentially offensive environment." - Note this doesn't apply to you, only we will be insulting prima donnas. You will conform.
"Flexibility adapting to deadlines, changing schedules, priorities and unpredictable events in a fast paced environment." You should be able to meet deadlines that are assigned arbitrarily. You'll have no control over your own schedule, but you'll be expected to give highly detailed attention to whatever the project of the day is.
"It’s rarely we call on it, but if something breaks in the middle of the night, you are expected to be on call to address that issue 24/7." - We'll cheap out at every opportunity, buying shitty hardware and cheap services, because it's not us that has to fix it when it's 2am Christmas morning. If you keep shit running, then we were right to be cheap. If it fails, then you're a bad IT person. That you recommended a different option is irrelevant.
"we are not money-motivated group" - We aren't motivated to give you any money.
PA will surely find someone who meets their requirements and accepts their level of compensation. PA will be lucky to hang onto them for more than a year. Anyone who has accumulated all of the skills that this post requires, will also not stay in this position for longer than it takes to put it on their resume.