If you want me to ponder why Macs have such grip on technophobic creative type, that's a whole another discussion.
No one wants you to do that.
I'm simply conveying to you why she bought these iMacs for the crew. And not just any iMacs, top of the line iMacs with maximum specs. She is the type that just blindly orders the most expensive as the best tool for the job, regardless of the purpose of the job. And for her, it's Apple or nothing. Phone, tablets, computers, fruit, etc..
What you're conveying is a desire to turn what is at worst managerial incompetence into justification for a preexisting irrational bias. If only she wasn't a delusional technophobe, otherwise known as a Mac user, she would have known how to accommodate poorly designed software! Oh well.