Supposedly the latest gen Remingtons with the QR code on the receiver are actually pretty square/true out of the box. Likely new tooling/machining used to make them now. I've heard horror stories about nearly every rifle out there, Tikka bolts falling apart, Sako's not ejecting cases, Remington triggers, Ruger American mag issues, Kimber accuracy issues, Christensen Arms CF barrel issues. I don't think any company is completely exempt from making mistakes so to teach his own.
It's no secret that Remington has had financial problems and when that happens they look for creative ways no stop loosing money. How they stop loosing money is through reducing production costs... meaning quality.
When a company brands itself as a hunting centric brand and hunters are notoriously cheap, the company is boxed in to compromises on quality to fit that budget.
On top of that, Remington is a victim of their own success with a saturated the market... meaning they will struggle to hit the sales volumes of the past. This opens up the market to niche companies that can be competitive with better quality specifically because they are not scaled for high volume.
I still think the Rem 700 is a decent all around hunting gun and good enough in practical terms even for competition, but competitors tend to be fearful of buyers remorse from spending too little and needing to upgrade, as opposed to buying the best one time and being done with it.