The major difference is that these new phones have advanced AI features and improved camera quality.
So what?
That's the same story every year.
In my opinion, if you have any phone from this decade, then you should be good to go. Only if you don't should you consider upgrading to a new one.
The thing is, most people don't even buy their own phones outright. They finance them using plans where they pay the company every month an installment, and receive a new phone every year in return. The main reason: They can't afford to buy it.