I couldn't disagree more. The obvious angle to play is that Replicants offer a way to replace human slaves. Just behind that would be that slavery has filled the void left by the banning of Replicants and that Replicants are perceived by some to be needed to set that aright. Will they play either card? I have no idea, but these possibilities are certainly things that are easy to imagine that could be "useful" for the plot, as things look now at pre-release.
It's not the slavery issue (though that was something always implicit in the original..wel...explicit eventually.) it's the grimdark child trafficking. The implied sexual trafficking also....the society already shown in BR has what appear to be licensed and legal red light districts, and a level of desperation or technology to keep the, fully staffed. So why would it exist in the narrative? Beyond a heavy 'look, humans are shit to humans, no wonder they are Shit to replicants too' and a heavy 'replicants as humanities children, which are treated badly but may ultimately be its salvation' what purpose does it serve to story as currently presented? Could the same story be told without the need to lean on Shock (not that it's uncommon in this century's media) story crutches?
Because as NuBSG (something which borrowed actors, story hooks, and slang from BR) shows, there are people who aren't going to respond favourably to that use of a very serious real world problem as set dressing in a fiction. (Myself included.)
It's also infantile storytelling. The original never needed to make a villain appear villainous by showing them harming the weak or vulnerable. Modern storytelling though...relies on that trope. And it has its roots in children's stories...you introduce you child as an orphan or suffering to engender sympathy (Roald Dahl does it over and over, and Harry Potter continues that cue. As examples.) except now, in adult fare, we show that suffering, usually to a horrible conclusion, as a moustache twirl to show a villain (group or individual) as a villain. It saves bothering with character or motivation...here is a villain, watch him lose and be glad he did.
None of that suits the narrative style of the original Blade Runner. There was more grey and less gratuitous stuff. What violence was lingered on, was framed artfully or fast and hidden in shadow. The really dark stuff (Priss was a pleasure model.....Sebastian was dying from a genetic disorder probably grafted into the Replicants...etc etc.) was implicit, not explicit.
There is no grey in what has been shown, and it's a clumsy way of showing a society in decay so we can shine a light on the 'good' that much more easily.
It's has the potential to be lazy storytelling.
But, am hopeful it won't be, and will be handled well...though that almost never happens.