The new law allows you to have more than one charging connector provided that either the USB-C one is the best one, or the USB-C one is as good as the spec allows. If the new connector’s genuinely better, then it’ll beat a maxed-out USB-C connector, so devices will provide it in addition to a maxed-out USB-C connector.
Sometimes when a product is whitelabeled and can be bought directly from its real manufacturer for much less, there’s still a good reason to buy the expensive one. The main one is that sometimes the ones that pass QA are sold via the whitelabeler and the ones that fail QA are sold directly, so the cheaper ones are known to have something wrong with them and you’re gambling that it’s something without symptoms.