It's true that I don't think you could find a decent acoustic guitar for anywhere near that price. I recently paid $500 for my first acoustic because I saw a clear difference in quality between the one I selected (Taylor GS Mini) and the competition in the $200-$400 price range.
I have one of the last Korean Ibanezes(2005) before production of mid and low end models was almost entirely moved to Indonesia, and in 2006 the Korean ones were much better in comparison.
Nowadays, after almost 15 years the Indonesian made Ibanezes caught up.
Another guitar I use regularly is a Squier Bullet Strat. It sounds kind of like Strat and it doesn't buzz at frets because of super high action, but it won't stay in tune, the ends frets are sharp and so are saddle adjustment screws that are a couple of millimeters too long and the icing on the cake is that basically anything played on second string makes something under pickguard rattle unless you press it at a certain spot. If you have to ask, it's audible through pickups and kills sustain.
I think you can find equally bad USA-made instruments at several times of the price if you look hard enough, but I wouldn't call these good instruments.
Back in the 80s I bought a Charvel (Japanese) as I couldn't afford a Jackson (US made) - the cheaper Floyd Rose tremolo was disappointing but it was fine to play. Eventually switched to an Ibanez RG 570 which was super nice to play.
The type and grade of wood used will also affect the string vibration and what overtone frequencies are refected back into the strings. It takes 20-40 years to mature a mahogany tree so while your boutique makers will spend the time to source the perfect timber you won't get that for a mass produced guitar.
There are guitarists who swear by their guitar tech who will adjust everything from bridge height, neck tension, even reseat and glue the neck before they pick it up the first time. I pulled the neck off my old Charvel more than once to get a lower, more even string height along the fretboard. Second time I filed back a few frets that had nicks or weren't quite evenly set and sanded the epoxy coating off the neck and replaced with shellac for a smoother raw wood feel.
It sounds more than okay (which is subjective). The body is light but without any head dive present. The neck is a dream and the fretwork is impeccable.
The tuners are bad but not awful. That's the only bad thing I can say about it.