Grilled Shrimp Taco Bowl

Name: Grilled Shrimp Taco Bowl
Ingredients: 4 green onions, chopped and divided; 1/2 c. chopped fresh cilantro, plus more for garnish; 1 c. plain yogurt; 1/2 c. mayonnaise; 1 clove garlic, chopped; 1/4 c. red wine vinegar; 2 tbsp. fresh lime juice; kosher salt; Freshly ground black pepper; 2 tbsp. extra-virgin olive oil, plus more for drizzling; 4 corn tortillas, cut into thin strips; 1 1/2 lb. medium shrimp, peeled and deveined, tails removed; 1 c. shredded red cabbage; 2 romaine hearts, finely chopped; 2 avocados, pitted and sliced; 1/2 tsp. crushed red pepper flakes