Undrave
Legend
An orc being stronger than a human is also flavor.
Both a playable Orc and Human can start the game with 17 in their STR and they can both end the game with 20 in STR. The Halfling can also end the game 20, even if it takes one more ASI.
You're really overstating the 'flavor' thing.
Also, what about all the Racial trait that are CLEARLY cultural, would you complain about their removal from the Species level of character creation too? Stuff like weapon proficiencies? It's 'flavor', but it's also nonsense that all member of a race are apparently born with the innate ability to use a longbow.