I don't have a problem with this uncanny valley effect at all, it's more like modern games having a much too sterile feel about them compared to older ones. Shitty effects that make character models look like they're covered in plastic foil and make surfaces that are shone upon glow brightly just make everything look so artificial and crappy. Something like Thief might look like a low-res version of a real life scene. Anything from Unreal Engine 3 looks like shit precisely because of all the horrible effects used there.
Comparison pics:
Dishonored, which runs on UE3 and look how horribly shiny most surfaces are:
Compare that to the Dark Mod, which also has too much bloom for my tastes but much more tasteful lighting:
And good old Thief 2:
Thief 2 looks the most "real" to me, due to the lack of glow-effects on lit surfaces. Dark Mod has some annoying bloom, but the lighting is done rather well and adds to the atmosphere. Dishonored is by far the brightest and shiniest, which detracts a lot from the atmosphere. If every surface glows when light falls on it, it doesn't look realistic at all, but artificial and unnatural.