The fact of an Apple-made Wi-Fi chip could be a big deal though, with implications beyond just the iPhone.
For example, while many (most?) of Apple's products have transitioned by now to Wi-Fi 6/E, there are some that remain stuck on Wi-Fi 4, notably the Apple Watch and the HomePod. At least some of this is due not to engineering but financial considerations (use older chips, preserve larger profit margins).
So, if Apple finally has a lower-cost Wi-Fi chip at its disposal (the main objective of the project to develop an in-house chip and get away from Broadcom) that incorporates the latest technology (version 7), it could enable the company to implement more current Wi-Fi throughout its product lines -- and possibly even add new (or resurrect old) products. Wi-Fi 7 AirPort Extreme anyone?