Many youtubers and tiktokers are using iPhones to film, take photos to make clips and gain millions of views, so buying a new iPhone is a good thing for them to do. So it can be said that it completely depends on each person's needs, let's not try to be smart when giving advice to others to invest in bitcoin instead of buying an iPhone. Many tiktokers in my country earn thousands of dollars every month, I believe it brings even higher profits than your investment, OP.
I find it silly and funny to compare buying daily necessities with investing. Furthermore, buying an iPhone or anything these days can make money, so don't rush to judge someone just because they buy an iPhone or waste money. Social media is growing and we have many jobs that make money even when you are entertaining or eating, so don't try to act like you are the only one who knows how to make money investing in bitcoin. I see comparison as just more jealousy trying to prove that we are right and others wrong when it comes to buying an iPhone.