This is a common misconception. Even a piece of plastic benefits from a higher resolution sensor. It’s not very hard to get moiré on a 45mpx sensor with a mode

This is a common misconception. Even a piece of plastic benefits from a higher resolution sensor. It’s not very hard to get moiré on a 45mpx sensor with a modern lens, hence we most definitely need higher resolution cameras. But even with a lower resolving power than that there’s an advantage.