Because the article is terribly low on actual information, below is the spec for 5G network locations services. In short, the network can ask devices to assist in locating them. Without the users consent or knowledge.

My best guess is that apple will reduce in accuracy or outright remove those features. Unless the user dials an emergency number of course.

Also, the devices named are the first ones with apples own modem, so it can be assumed that Qualcomm did not give Apple sufficient access to their modems to do this.

https://www.etsi.org/deliver/etsi_ts/123200_123299/123273/16.04.00_60/ts_123273v160400p.pdf