At this price point they simply cannot afford to do setups, drill pickguard holes straight, cut the nut to the right depth etc. They hurriedly assemble them and out of the factory they go. The more you pay the more consistence you get.
Luckily Squier gets the basics right (neck pocket, string alignment, shielding) so these instruments are totally fixable, even though they might require extensive TLC.
I don't mind having to do that on these ultra-cheap guitars, I actually welcomed the opportunity to learn some guitar tech stuff because it allowed me to work on my pricier instruments with confidence.
The question I wanna ask is why can't Fender file the fret ends on its overpriced MIM instruments and dry the necks properly, even on expensive MIAs? But that's for another thread