The myth that you are "forced" to upgrade by Apple comes from the consoomerist Applebros for whom owning the latest Apple product is their whole identity. So, when Apple comes out with Next Product, that means Applebro no longer owns Newest Product, so he "has" to go out and drop a hilarious amount of money so that he can keep bragging on Facebook about his iPhone. But before he does that, he'll whine and cry for a few days about how "Apple is fucking me over" because they had the audacity to release a new device just a few months after he bought his, robbing him of his right to have Newest Product before he was ready.
The reason it's not a problem that Samsung releases new products every year is nobody buys a Galaxy so they can soyface like a fucking faggot on their Instagram. It turns out that Apple releasing new products every year isn't a problem if you're not a fucking faggot.