I believe it’s unfair looking at prices of another country from the perspective of the US. From the people in the EU and many other countries, a price increase is a price increase, regardless of currency exchange, unless they’re expats and got paid in USD.
...and Apple are selling a high-value, high-margin product (for which they own much of the supply & distribution chain) which gives them some flexibility on how they set their international prices. They're certainly not reviewing prices daily - they'll be making guesses about likely long-term currency variations - and can choose to err on the generous or mean side. I doubt the current prices completely reflect the currency changes over the last few days.
As for the moaning - the fact that EU/UK prices are almost always quoted including tax, whereas US prices always exclude the (lower & AFAIK avoidable) tax creates "sticker shock" that lingers even after you reason it out.
However, in the past US companies (including Apple) really have taken the Mickey - in recent years $1 (ex Tax) = £1 (inc tax) hasn't been far off the mark with tax at 20%, the pound at ~$1.30, and add a bit of credit for shipping, localisation, warranty etc. However, that $1=£1 exchange rate has been the norm for IT products since the 80s - when the pound was higher, sales tax was lower
and prices of computers etc. were generally quoted without tax. Looking at a copy of a US magazine like Byte and seeing all the prices with, pretty much, the '£' just changed to a '$' was infuriating. People were reportedly getting cheap flights to New York to buy Macs and coming out ahead (even if they were "good" and properly declared it at customs) I guess the web made that sort of pricing harder to get away with - apart from making it easy to compare prices, people would just buy stuff from Amazon US and eat the delivery charge.
NB - for US folk, it's worth noting that, in EU/UK, any business/company with a
turnover (not profit) > ballpark $100k (e.g. £85k in the UK) will have to charge tax on their own products/services but can claim the tax back on most things bought for business (Terms and Conditions Apply) - and lower-turnover businesses can opt-in if it is to their advantage. So a lot of people using Macs for work or self-employment could, potentially, not be paying that tax. (The downside is that the VAT people have a reputation for making the Income Tax people seem like cute, fluffy kittens...)