I have purchased five new Gibsons between 2013 and 2015, the only issue with any was some slightly loose tuner bushings on my LPJ. I hear about these QC issues, but even as a repair tech, see very few. While value perceived is subjective, I feel like my new Gibsons were reasonably priced.
You have been indeed fortunate. I have bought two new Gibson's, both SG's and both had issues with tuning stability, intonation and humming/buzzing. I sent the 2003 SG back to Gibson, and I'm still investing in my 2016. I had a vintage 1968 SG that you couldn't keep in tune no matter what you did to it. I also had a 1959 Gibson Les Paul, the Holy Grail of guitars (which I sold in 1998) and while it was a "coveted relic," it was not a magical or remarkable instrument. It was 100% Gibson hype, which, while very good for the collector/resale value, it isn't great for recording when you need tuning stability and quiet operation. It's in a private collection in Fresno now and is never played, which is what it does best.
On the other hand, we have a 1979 Gibson Les Paul that has been in the rack in my parent's studio since nearly new. It's been a good guitar. It hasn't had a setup or adjustment in 25 years that I know of, it sounds decent on recordings, although it's not a quiet guitar by any means, and to be quite honest with you, when you hear it on a recording, it's tone is not remarkable. It's good, but it's not magical, despite it's collector value.
I am on a first name basis with the local Gibson repair tech, by virtue of my struggles with my SG. He says the biggest issues he sees (on new Gibson's) are things he cannot repair...things like loose neck joints, fretboards separating from the neck, incorrect angle on the bridge and tailpiece inserts, etc. We've recently had forum members post herein with these very issues on brand new Gibson's.
The bottom line is, use what works for you. If you don't mind buying a new guitar, followed by trips to the warranty tech, ordering a new wire harness and pickups, shielding tape and the like, then that's a personal choice. It's not something I wish to continue doing
I am currently in communication with Jackson USA Custom Shop Staff in Arizona regarding having a custom San Dimas built to my specifications. The factory is within driving distance from SoCal, which is a nice thing. If I am going to shell out the $$$, I would rather not have to rebuild it after I get it home.
I'm done with Gibson's, other than for their collector value....