The phrase "thx2allgamefans!" can be found written on the Switch Pro Controller's motherboard, just above the right analog stick; the positioning of this message allows it to be easily viewed by holding the right analog stick in the down position and peering through the surrounding socket.
The first batch of Nintendo Switch consoles suffered an issue where the left Joy-Con would frequently desync as the result of a manufacturing error. This could be remedied by placing a small square of conductive foam atop the Joy-Con's antenna traces, which would significantly reduce interference. Nintendo themselves would amend the desyncing issue in later batches of the Switch.
To avoid anyone from possibly swallowing Nintendo Switch game cartridges, Nintendo had them laced with Denatonium Benzoate, a non-toxic bittering agent, so they would taste horrible. The agent is also known to be used in animal repellent, nail-biting prevention, shampoos and soaps.
In the system's Photo Album set-up page, one of the drawn characters closely resembles the character 'GO' from the Japanese gay pornographic movie A Midsummer Night’s Lewd Dream. The film's character had become part of a popular meme in Japan which had spawned as a result of the film's over-the-top acting.