Switch 2 Theory

In the reveal trailer, we see what could possibly be IR sensors in both joy cons. Combine this with the seemingly pointless decision to have more of the top of the switch visible in docked mode. Could this mean the joy cons could be used like Wiimotes and Nunchucks with the visible part of the switch acting as the infrared sensor that came with the Wii. I am not very savvy with tech so I have no idea if this is viable, but I thought it was interesting