Well, just had the system freeze/crash on me yesterday.
Was playing Breath of the Wild when the Home and Power buttons were kind of unresponsive. I could still move around in game, but couldn't go back to the Home screen. Holding the Home button pulled up the Power Options, but I couldn't confirm any options there. The buttons were still responsive, I was doing attacks/jumps in game, but I couldn't use the main UI. Held onto the Power button for a while and that opened up another Power Options menu which then prevented me from doing anything in game. I was getting worried because couldn't find a way to exit the game/enter Sleep. I held onto the Power button for a minute and it crashed the game (music was still playing all the time prior to this), and finally restarted the system.
Ugh, I thought I got one of the good units too...