Given that Pascal, Basic [1], Oberon [2], Java [3], Ada [4] and C++ [5] already exist as alternative to C and Assembly, adding Go seems like has having yet another positive alternative.

Although not TinyGo based, F-Secure's Foundry hardware key runs Go in bare metal [6], they use their own runtime instead, TamaGo.

[1] - https://www.mikroe.com/compilers

[2] - https://www.astrobe.com/default.htm

[3] - https://www.microej.com, https://www.virtenio.com/en/portfolio-items/preonvm/

[4] - http://www.inspirel.com/articles/Ada_On_Cortex.html

[5] - https://www.mbed.com/en/, https://www.arduino.cc/reference/en/

[6] - https://www.f-secure.com/en/consulting/foundry