“Searching on Aliexpress, I found several USB-C hubs with the same case, same specs, and probably the same components… for 10 euros a piece.”
The 90 euro Satechi hub sold in Apple’s own store is a rebranded Gopod part. Both of his died within about a year, with HDMI dropouts and Ethernet falling back to 100 megabits. The MAC address gave the game away. The extra 80 euros bought a logo.