I can appreciate the stories of 4runners lasting 200k miles, good for you. I can't attest to the situation with every 4runner only mine and how badly it turned out. My belief is this is just like the Tacoma where there is a latent defect for that year and Toyota is hoping to ignore it.
Reasonable reactions from this type of crowd --- did I wash the exterior and underbody often because I live in Ohio and we have snow? --- yes I did (personally I think the photos of the great body condition demonstrate that but believe what you will). Did I do more than oil changes and hope --- yes, I followed the maintenance schedule because I'd planned to have the car a long time (and had repairs that were done). Did I inspect it regularly --- yes, but I requested Toyota do it while they were doing various service believing they'd be better at it than me (in my story I stopped at Midas when the car started shaking because they were the closest place ... the Toyota dealer was another 5 miles away and I was worried going even that far. All they did was look and say "yeah, you're done".).
Did I get 100k ? Yes --- 101,872 to be exact. Although it appears this vehicle became a danger to me and others sometime in the last year, so in the 90k mile range.
I realize I'm not going to get much sympathy from a crowd that's capable of just installing a new frame. Maybe I just lost the Toyota 4Runner lottery with the model year having a defect but I expected better from a Toyota product. The dealer threatened to start charging me fees for it sitting on their lot while I sorted out a direction, so I sold it at a loss and moved on.
For me, the Toyota experience was not the durability I expected and I'm no longer their customer. I'm not trying to hold Toyota accountable for wearing paint, brake rotors, a radiator hole, or even the rear seal failing --- that stuff happens in the life of a car. But a frame having a defect such that it dissolves in 90k miles --- yeah, I have a problem with that.