What is proprietary about Apples chargers? They sell USB-A and USB-C wall warts, and their devices happily charge on non-Apple chargers. Their laptop chargers are USB-C and have been for some time. I charge my MBP from a Lenovo power brick. The only proprietary part is the lightning connector.
To answer the question, with a usb-c/micro usb cable? No, obviously not. With a Google/Samsung/Anker manufactured wall-wart? Yes! Android "chargers" aren't a thing that I'm aware of with USB-C, just with micro usb, which would be pointless, because the proposed law would make those redundant anyway.
When was the last charger sold with a built in cable? And honestly, why is carrying 2 cables such a hardship? I agree that USB-C would be more convenient, but the bluster that is made every time this "issue" comes up really is over the top. Look at it this way; the argument goes that having Lightning cables produces e-waste. Changing to USB-C will render existing Lighting cables useless, thereby producing significantly more e-waste! At this stage both arguments are redundant.
As to being labelled a 'troll'; the OP made a factually incorrect statement. I questioned, genuinely, other than the cable, what was proprietary about wall-warts and charging bricks currently made by Apple?
Not if the cable is built into the power adapter. But if the power adapter just has a USB-C port, then you can charge it using the cable that comes in the iphone box.
Not really. The biggest claim is that this measure will reduce e-waste, but that’s a red-herring since the e-waste is in the charger not the cable, and chargers are already interchangeable.
… but Apple’s chargers have been USB on the charger side for ages (previously USB-A, currently USB-C). The easy availability of chargers that work with the phones did little to stop the complaints when they were unbundled.