Macs are the exact opposite of ‘security nightmares’, given the very low numbers of viruses and worms that target them, so I’m not quite sure where you’re going with that.
Apple products are also not only affordable by the “top income bracket”, by any means – comparing ‘apples to apples’, i.e., very similar Windows and Mac machines or iPhones vs Android phones – the prices are very similar. It’s fair to say that top-tier electronics in general are more easily affordable by those with more disposable income, but these days it doesn’t make any sense to single Apple out for being singularly expensive. In no possible universe are all Apple-product owners ‘hyperprivileged’.