There are a lot of us that mainly use the iPhone as a phone too.
I don't really move stuff onto or off of the iPhone via USB-C. I read email, do Notes, Calendar and Reminders but that's all over WiFi. I'd guess that the average person doesn't do a ton of things where they need to transfer 100 GB in a short period of time.
Then you wouldn’t be a pro user. Or should we take the attitude that what you do is what everyone else should be limited to? Where do we stop?