Leave it up to a bunch of postmodern faggots to try and deconstruct Tolkien and his idea of "Good & Evil."
To be fair, Tolkien flip-flopped a lot throughout his writing career about the existence of unredeemable evil or not. Morgoth himself, the embodiment of malice, envy and an evil so terrible it literally permeates Middle-Earth millenia after his imprisonment, was locked away because Eru was against his execution, thinking he could be redeemed one day. That's also why Sauron was brought to Valinor for trial and was given multiple chances to redeem himself over the ages.
The Orcs are corrupted Elves, so it is possible some are more decidedly wicked and evil than others, though none of them are "good" either. After all, not all Elves are good, we have seen them show arrogance, pride, cruely even. We have seen them antagonize or imprison innocents, so it makes sense that if some members of the good races can be imperfect and almost considered evil in some ways (at least from an outsider's perspective, like the dwarves imprisoned in Mirkwood by Thranduil), then it is possible some orcs would be less evil than others. Some just want to survive where most are actually bloodthirsty psychopaths.
As for seeing an orc baby, well we know the orcs reproduce sexually, so babies are bound to happen. The question of orc females and reproduction is not really developped in any of the Tolkien content, he wasn't writing about sex much in general, and people assumed the females were basically parked in rape camps like Darkspawn in Dragon Age, but there's no real answer from Tolkien himself as far as I remember.
This show has decided to show the orcs in a favorable victimized light when the focused protagonist is Adar, for obvious reasons since he considers the Orcs his descendants. In all other scenes with Men or Elves, the orcs are seen as cruel and wicked creatures.
