This is non-news, this has already been the case since 2009 [1]. It mandates micro USB, EU iPhones come with an adapter. I'm not sure what the current status is, USB-C phones don't come with an adapter.
I don't know if it's what the author of this comment meant, but iphone chargers have an USB plug and the charging cable is a USB - Lightning cable.
But it's the case everywhere no?
It might differ per country. In NL it has been the case. The latest comes with an USB-C -> lightning cable [1]. I think the micro-USB might have been around iPhone 7 era.
[1] https://en.wikipedia.org/wiki/Common_external_power_supply