You didn’t address my second point: how does genetic testing give you an objective measure of lionness when it’s still ultimately based on observations and subjective assessments?
Genetic testing is far more scientifically revealing than just eyeballing something because it's based on actual objective tests, data, and math.
Just like radio astrology is far more scientifically revealing than just looking up at the night sky and declaring theres nothing more to the universe than meets the eye.
Typically a genetic variance of >2% indicates a different species