These Black Orcs or “Bigger Black Goblins” are noted to be much taller, bigger, stronger, faster, smarter and more disciplined and actually come with steel industries
The Goblin Paladin’s dream is surpassed with them
This change occurs right after the end of Volume 1 of Goblin Slayer’s Light Novel series and GS is aware of how they were suddenly replaced en masse after a few reports and talk by adventurers who escaped with their lives
Uruks in the films are significantly superhuman, especially those bred by Saruman, but those in the books are on average weaker than a professional human soldier, or at best on-par.
While they are intelligent, they lack cohesion and culture except in a very primitive sense, and are only held together by the god-monsters that lead them. Notably, in the film Sauron's Uruk Hai are simple savages because he gives nary a fuck about them. Uruk Hai scattered in little tribes of double or triple digits may not be able to maintain the skills and resources we see them use in the books and films, they may struggle to form effective, lasting social units, there may be large gaps in their knowledge that would have been filled by other servants of the wizard or lord of Mordor. Remember that the Uruk Hai are very young, technically, and it was the Orcs doing the mining and the smithing. They may collapse into a state of stone age barbarism simply because they cannot maintain or pass on the advanced military machine they were one hyper-specialized part of.
Regardless, a six or seven foot (or even a five or six foot book version) brutally intelligent caveman with at least some basic weapons training is going to be a colossally different proposition to deal with than the Goblins and occasional "big Goblin" from this anime series. Remember,
GS himself is a manlet, and would be dwarfed in size by an Uruk Hai.
A different proposition, in multiple ways however.
An Uruk Hai would require three or four times the food that a Goblin does, minimum, and that food needs to come from somewhere; If they raid they'd need to raid three or four times as much, if they hunt they'd need three or four times the area to range in, if they farm they'd need reasonably spacious areas in which to farm. Larger footprint means more likely to get noticed, or more likely at least to intersect with human civilization.
That said the Human civilization of GS is suicidally incompetent, so they may just ignore the giant neanderthals taking over villages that they need to feed the cities 99% of the time.
Though now, I think the guys at the guild will STRONGLY recommend the Porcelains start off with giant rats and giant cockroaches more often, and the Uruk-Has at the very least are placed on the level of bandits(those exist, in GS' past with the Rhea Burglar, they found the remains of a village and the hired adventurers who got massacred by bandits)
I'm just being reminded exactly how childish this setting is. Any DnD adventuring party would be horrified by this culture.
What's the goal of the Uruks? Do they breed via mudpits or the same as Goblins?
Breed the same as Goblins
I believe the implication in the films and books was that Uruk Hai were conceived naturally (In the films, we get a statement of their being literally bred from men and orcs, and in Tolkien's writing he flat out says "Orcs by nature multiply in the manner of men" or something along those lines), and that they were
placed in the pits to accelerate their growth.
If they do not rape, but only kill,GS would not have reasons to hunt them more then other monsters.And if they attack like army,armies would be used to fight them.
But - at least we would not have illogical rapes.For example - 4 female adventures raped and killed in elf fort was killed before they born even one goblin.The same goeas for GS sister and other womens there.What kind of logic was behind that ?
GS Goblins are retarded, and occasionally act as such, which is theoretically fine for a setting, though the problem arises when they somehow manage to start snowballing like some kind of rape powered Zombie plague when their retardation would cripple their logistical ability and any group of Goblins larger than a hundred would be at constant risk of starving or tearing itself apart.
Uruk Hai, not benefitting from what amounts to God insisting that they remain a threat capable of quickly scaling upwards despite logistical deficiency, and having significantly larger logistical concerns, probably spend most of their time just focusing on "existing" like you'd expect groups of burly cavemen to do.