The way I view the whole racial attributes issue is that what we're really dealing with is species, not actual race. It's more like saying that a cheetah is naturally faster than a tiger, as opposed to any modern real life scientific understanding of race. When you look at it from that perspective, almost all the stats make sense. Like it's entirely possible for certain species, even in the same general "family" to have different capacities. I can believe an average orc or dwarf would always be stronger than an average elf because they are built that way on a biological level, the same way an average bulldog is probably going to be stronger than an average golden retriever. Wisdom, which from my understanding is more about the ability to process and interpret the world around you,as opposed to the typical useage of the word, also makes sense since different species can have brains wired to be better or worse at interpreting their environments in varying ways. Like how dogs see in black and white. Even intellect makes more sense since it's certainly possible for different species to just be more intelligent, the way that dolphins are smarter than a lot of other animals. That just starts to tread on uncomfortable territory when you apply it to sapient beings, I feel.
The only thing I don't think lines up is Charisma, since that very much feels like a learned trait. I can buy that, to use an example given above regarding tieflings, that tieflings get a charisma bonus because they look weird and intimidating, that even lines up with dragonborn getting a Cha bonus too. But then...why don't half-orcs get that same Charisma bonus? Why do half-elves get a charisma bonus, but not full elves? If halflings get their bonus because, let's say, they're cute, why don't gnomes also get that? Shouldn't every class that looks very different from humans get a charisma bonus to represent the impact they have? And furthermore, why would that charisma bonus apply to everyone? Why should a tiefling find another tiefling intimidating and persuasive inherently? Why should that +2 bonus apply when talking to say, an individual who has summoned actual fiends and demons? Or if they're talking to an ancient dragon, good or evil? Hell, that +2 bonus doesn't go away if a tiefling is talking to a literal fiend.
(This is why my interpretation of tiefling charisma and intelligence is that their fiendish blood literally makes them magically more persuasive and sharp-minded)
