They can potentially do it for data and certain accessories such as various addons and audio devices however not for charging. The EU regulation requires that

They can potentially do it for data and certain accessories such as various addons and audio devices however not for charging. The EU regulation requires that any device capable of charging above 15W to also provide support for USB-PD. The TLDR is that between 0-15W any USB-C cable and charger should be able to charge @5V up to 3A as per the base USB-C spec. For charging above 15W or above 5V any USB-PD certified cable and charger should be able to be used up-to the maximum allowed charging for that device or up-to 100W. This has also impacted a lot of other handset manufacturers with proprietary fast charging solutions such as Samsung and Huawei.