Good point, it should be made clearer.
But do note that PicoPix Max is not advertised as supporting DisplayPort, VGA, Component video, SCART or similar video input formats, whether through their native connector or through USB-C. Remember that USB-C is simply a type of connector which can carry a lot of different signals like USB2, USB3, HDMI, DisplayPort, Thunderbolt, Power Delivery etc. It’s not required for a device to support all those, and should also not be assumed as such. The most popular consumer devices like iPad Pro, MacBook etc. work fine with PicoPix Max via USB-C video output. If your device doesn’t support alt-HDMI mode, it can also be considered a limitation of your device! We know at least the 2019 16" MacBook Pro has an issue with this (we are investigating).