As a buyer I think the location of the actual factory isn't as consequential as the parts/materials used. Most of the parts are milled by machines now and the final assembly comes down to tightening screws. So what can make the biggest difference is are the parts just as good as the models made in other factories?
Some of the LTD basses are made in Korea to a pretty high standard. Lakland and Warwick farm their lower/mid level sectors out to a couple Asian countries which I think includes Korea. If the woods, machined parts, and electronics were 100% the same, I don't think you's notice a difference, but there is usually more than that. Warwick will tell you that the woods that go to Korea or China are the same as the German basses, but I've played a Pro Series thumb and it was way lighter physically and tonally. Same goes for the Lakland Skyline series, which are great, but the woods aren't as dense.
Then there are little hardware differences that make it so you can't compare apples to apples.
All that said, I wouldn't dismiss a bass simply because it was made in Korea.