There are all sorts of things that a new phone can do that one from a few years ago, even if you don't personally use it. Similarly even if you don't play games

There are all sorts of things that a new phone can do that one from a few years ago, even if you don't personally use it. Similarly even if you don't play games, plenty of other people do. It's also incorrect to only consider phones, as TSMC manufactures many (most?) of the non-x86 laptop/desktop CPUs, where performance is much more overtly desired. The final point is that this isn't just a matter of smaller equals faster, but also smaller equals less power - which I assume does matter to phone users.