I doubt 95% of users even sync anymore. The only reason you used to do that was for podcasts, music, and backing up. Now, that’s mostly pointless thanks to streaming services and backups you can do in the cloud.
Why would you do that? It's going to be super-slow - I don't believe it supports Fast Charging as the port can't handle the minimum 20 W.
So yes some people will buy a USB C to lightning cable for their older iPhone and a better wall adapter but most people will just use the included charger.