Those "surface optics" are the "look" I was referring to, and something one might think Warner would be sensitive to, were this not a niche complaint they're confident isn't going to become a headline controversy.
Still.
Arrow, The Flash, Supergirl, DC's Legends of Tomorrow, Gotham, Krypton, Titans, Doom Patrol, Swamp Thing: Blu-ray (and DVD) releases through the main Warner Home Video division.
Black Lightning: no Blu-ray, manufactured-on-demand DVD only through Warner's boutique Warner Archive subsidiary.
One of these things is not like the others -- in more ways than one.
As you acknowledge, those optics suck.
I do agree with you, however, that it's probably more economics-driven from Warner's perspective than anything. They did release the first season of Black Lightning on Blu-ray, and they have the sales numbers from that to work from. Presumably, it must have sold abysmally, even compared to such basic-cable marginalia as Krypton. There is a stink of racism here, but it's actually probably more attributable to viewers and home video purchasers than it is to Warner.