Very Good But Am I 'Racist' for Finding the Colour-Blind Casting Distracting?

I have absolutely NO problem with casting Dev Patel as David Copperfield (even though I personally prefer authentic casting, or race-switch casting which at least acknowledges the racial dynamics of the era in which a story is set), but it's distracting when a film/show cast a POC in a role and then proceed to cast white people as *biological* family members on *both* sides of the family (i.e. father and mother), or cast a man of East Asian descent as the father of a Black woman, or a Black woman as the mother of a white man.

Maybe the point is to say, race doesn't matter, but this is film, not theatre, and film is by definition a less theatrical, and less expressionistic medium, which benefits from a degree of authenticity and verisimilitude, and it's difficult to suspend one's disbelief when asked to believe various characters are direct relations. Also, when a character is introduced as, say, Mrs Steerforth, I automatically assume it's Steerforth's new wife, rather than his mother, seeing as he looks nothing like the woman in question. Thus, it arguably *hurts* the storytelling, when cinematic storytelling should be all about short-hand visuals that simplify rather than complicate dynamics.

I hope this colour-blind casting doesn't become a trend in film/TV (once again, it's perfectly fine in more expressionistic art like theatre) because I'm afraid it potentially stifles creativity and storytelling.

If a dark-skinned baby is born to a white couple in a film/TV it's often a shot-hand sign to indicate that *shock horror* the mother has had an affair. Maybe some people think this contrivance is 'racist' (in a literal sense, since it makes an issue out of racial differences), but I am *not* Morgan Freeman. I am not living in a universe where we can ignore that, guess what, racial differences exist, even if they're merely superficial, and that, alas, racial distinctions have had a social impact on how we treat each other (which is a bad thing, but nevertheless, a REALITY, at least up until now).

Anyway, like I say, this is a very good film. Each character is individually well-cast, but casting people of different races as biological family members is distracting (I half-expected the Anglo-Indian David Copperfield and the Black, by way of an Anglo-Asian father, Agnes to produce a white baby together), and don't give me the whole "But...but...Black babies have been born to white couples, and white babies have been born to Black couples" excuse. Yes, it has happened, but it must be, like, 1 in a billion, or at least several million. Genetics can be weird, but the chances of a baby having a completely different phenotype to either parent is *extremely* rare, and the truth is that most children resemble one, or more likely both, their parents in some way or form.