Soak the brown rice noodles in hot water until tender, then drain and set aside.
In a small bowl, whisk together the tamari, fish sauce, lime juice, maple syrup, and red pepper flakes to create the sauce.
Heat the avocado oil in a large skillet or wok over medium-high heat and sauté the minced garlic until fragrant.
Add the shrimp to the skillet and cook until they turn pink and opaque, about 2 to 3 minutes per side.
Push the shrimp to one side of the pan, crack the egg into the empty space, and scramble it until just set.
Incorporate the soaked noodles, bean sprouts, and the prepared sauce into the skillet, tossing everything together until well coated and heated through.
Remove from heat and garnish with sliced green onions and crushed peanuts before serving hot.