You are over-exaggerating quite a lot to say the least. Microsoft Continuum currently works on Windows 10 Mobile with passive cooling just fine. Samsung DeX has

You are over-exaggerating quite a lot to say the least. Microsoft Continuum currently works on Windows 10 Mobile with passive cooling just fine. Samsung DeX has active cooling in the dock though, to be able to handle even heavier loads with SoCs as close to thermal limits as possible, without headroom.