High in protein compared to what? Is wheat better than millet, sorghum, quinoa, teff, oats, corn, and rice, or is it just a European tradition to base cuisine on wheat? I’m not an agricultural or genetic expert and I have no idea what relation genome complexity has to proteins or how that makes it useful to humans. Overall wheat is not very high in protein... it’s a crop grown for carbohydrates. If you were trying to fulfill your daily protein needs from wheat, you’d fall quite short. I suppose it complements more adequate sources. The protein it does have - gluten - isn’t especially digestible compared to alternatives like corn or rice, though it does have a texture that people find pleasant or useful in baking. Crops like lentils and soy are what you grow if you want to grow protein.