I can't tell an iphone at a glance from any other kind of phone. I've no clue on that.
People have different ideas of what skint is. My threshold for broke is very low, I'm aware my current what feels affluent to me is other people's broke. People who are not your idea of broke are allowed to be worried about the rising cost of living.
Also, refurbished electronic products can be pretty well prices & the more big name brands are more likely to get refurbished and plenty of people buy them in ways where they stretch out the payment or get them as gifts from more well off loved ones or get them from work. Someone owning expensive tech means little about how they got it or how their circumstances have changed. THe cost of living issue is changing many people's circumstances.
I don't drink, smoke, haven't had a nail appointment since I've been an adult, don't drive so don't run a car, buy all my shirts and skirts at charity shops (bought a new skirt for a £1 on Saturday when I was buying my son some items for cadet camp), all my electronic devices are refurbished, and I've maxed what my bank has for it's highest regular savings account. I know someone who has a tendency to buy all the things, her kids break things all the time, and gets help from their parents and others when emergencies come up. We're both worried about how the cost of living issues. I don't think I have more right to just because I'm regularly terrified to spend money.
Really, what do you want them to do? They resell the Iphone, lose the benefits they bough it for, and that cash will be gone on the bills within a month, and then what?
It's shite like this that I was raised with - though back then it was just having a TV that meant you couldn't really be broke - that has imprinted a need to argue with myself over every 'luxury' expense. I've had a broken toenail for years that regularly causes me discomfort that I finally contacted a podiatrist this year to get a quote for reconstruction, £45 per appointment and it may take 2 so £90, and I still can't will myself to make that first appointment because that little voice of 'you don't really need that', 'you'd be better saving or spending that on the kids', 'it's not that big of a deal'. Really, it's 'you haven't been good enough for that'.
If you're broke you've got no business wasting money and complaining
Complaining is basically a British past time. Everyone can do it. Whether other people take the complaint seriously is different, but there is nothing that takes away people's 'business' to worry and discuss their concerns.