If they'd had time to properly flesh it out as being a product of a Tesseract experiment it'd work. That would be in line with Captain Marvel and other Infinity Stone stuffs. Racking my brain (and I'm sure I'm forgetting someone), the MCU seems to have tried hard to avoid naturally evolved superheroes/supervillains coming from humans. All of them are created via technology or space magic rather than evolution or natural processes. Which does make sense because if you're not gonna have the X-Men, it's probably best to entirely avoid that whole aspect.