After 110,000 miles and 6 years of heavy use you see rot here? This is also similar to my 2003 Tacoma with 223,000 miles.
110,000 miles and 6 years old and yes it gets used and abused pretty heavily. My 2003 has 223,000 and is similar condition, as well as my 2008 Tundra.. Do I maintain my vehicles? Yes. Do I spend a lot of time doing it? No. As you can see the break calipers are dirty and pins need lubricated. Did I clean the calipers and grease pins? No! It will get done sometime in the next 6 months.
You bashing Toyota for your experience is not shared with our experience over the last 35 years. Furthermore, I really don't see it as universal with the brand as you claim it is. My recommendation is figure out what you might have done or not done to influence the experience you received.
The frame rotting you speak of happens with metal that is exposed to salt. The rotting is not brand specific. My suggestion is stay out of salt water or do something to prevent it. There is no perfect vehicle.