Gnomes aren't real. That's a ridiculous analogy. They are as smart as the person writing them wants to be, that's it. And if the writer doesn't want racial modifiers, then end of story. Which of course, again, all of that ignores how PCs are not a typical representation of their species anyway. Unless you can point me to a typical human that can take on a dragon with a dagger and have a good chance of winning...
also, the differences between the variation of the typical human being able to see color as opposed to the differences in variations between strength, intelligence, etc, is vastly different. Talk about a false equivalency.
But it's nice to see you're falling back on the same argument in the early 80s to justify why female PCs should have a strength cap. Noted.
Orcs are also not real, so there is no problem with them having an int penalty for gameplay reasons, right?
But it's nice to see you're falling back to the usual extremist tactic of accusing others of morally wrong behaviour when they run out of arguments. Noted.