1). If I have 4 USBC devices, and 1 USBC port, how do I connect them? With previous versions I buy a $10 hub. There are literally zero options to accomplish this with Usbc ( if I am wrong I would love to know about it, this is actually a problem I have)
2). The cables. Some cables support certain data. Some certain power. There are no markings to give me any of this information at all.
...albeit it'll only do data, and won't let you do P/D or video.
My impression is that the cheap-hub product got a lot harder to make because of how much more USB-C supports, such that you need to caveat any cheap product (as I had to there), and the products that do support all the USB-C features wind up being full dock-type hubs that start at around $70.
It has its own power supply. I have a USBC 14 inch monitor and a webcam plugged into the hub, and the hub plugs into my MacBook. The hub can power my external monitor, webcam and the MacBook.