Again, as noted in your last Ryzen-H cheerleading article, there needs to be more than 12 PCIe lanes for that to happen.
One dGPU at 8 lanes and one NVMe at 4 lanes... and there is nothing else left.
No space for Gbe (1 lanes), WiFi (only uses one lane, though the slot is wired for 2 lanes), fast SD card reader (1 lane), and definitely not TB3 (2-4 lanes).
Given it's also 1 generation behind the rest of the Ryzen lineup (still "12nm," when 7nm is launching in the next few days), PCIe4.0 isn't a thing yet, and will not be there to help out.
Of course, one could just link the dGPU at 4 lanes, as I believe the two ASUS Ryzen-H laptops have done. That being said, unlike DESKTOP PCIe scaling, any setup with Optimus (or AMD's equivalent) is much more impacted by PCIe bandwidth, since the full framebuffer has to be dumped via the PCIe port, rather than directly over DP/HDMI to a monitor.