1.Alright, so 2000 year old elf is actually super ignorant about the outside world. I guess thats fair. If the hobbit can be stupidly ignorant then so can an elf. Though I still think its ridiculous that she is surprised by what she sees. As if no one ever told her. 2000 years is a long ass time to be alive and have nobody tell you about goblins. Especially when you are not a comfy fat n happy civilian but a certified adventurer that has the ability to kill things, and does so for a living, this kind of knowledge would be useful. Random nobodies know what a high elf is but a high elf doesn't know that goblins are a problem. But high elf has been alive far longer than any human. This does not compute.
Edit: Actually nevermind, I take back a bit of what I said earlier. I think it's literally impossible to be alive for 2000 years and not know anything at all about the outside world unless your society is made of actual vegetables.
There is a ridiculous dissonance between Goblins actually being super dangerous being coupled with nobody caring because killing goblins doesn't pay well. Killing Goblins does not pay well despite the fact that they can wipe out entire villages and towns without assistance from other monsters. To make matters worse is that this has been going on since "time immemorial" and that means "a really long ass time." Maybe hundreds or thousands of years. This means all humans, all elves, all dwarves, all lizard people have known about Goblins and what they are capable of, have had their women raped, homes burned down and families killed, for hundreds to thousands of years. More than enough time for silver and higher adventurers to wake up and take notice...and yet nobody cares.
The second biggest problem is Goblins cannot reproduce without women to rape. Soooo for thousands of years Goblins have kept up their numbers simply because literally nobody gives a shit. Not even their brood-mare rape victims. When the first thing anyone with common sense would do is make 'goblin extinction' the quickest path to riches and glory. It shouldn't even be hard, they can't reproduce naturally. With all the available science and magic, these people could probably kill every goblin down to the last in under a decade. Its not like goblins have resources to fight back besides a few champions and a rare shaman. All they have is numbers, and an experienced person could easily kill a ton of goblins. What is the alternative? Do nothing, let their numbers swell until they become a problem worth being paid to kill? Well at that point, adding them to the pile of other monsters that are dangerous, you might as well kill yourself. You let the easy solution slip through your fingers. For thousands of years...
4&5. Not enough soldiers to go around...really? In a scenario where apparently monsters (that in the manga we haven't even seen yet, we're just TOLD they're out there.) are on the brink of destroying all of humanity? Not enough soldiers? In that case every adventurer should be a soldier. Your logic just collapses in on itself.
6. I'm talking about the Archbishop, apparently a very powerful character, is just standing around with a blindfold on doing nothing.
Everyone is a passive pile of shit just so the Goblin Slayer can look cool. Or an incompetent pile of shit. This is fine in a video game but this isn't a video game.
Its logic that only can exist in a shallow artificial world like a video game. Where all the characters in this manga seem to be functioning on a meta narrative like they are gamers and not actual people existing in a real world.