I think it really goes back to application. Every single manufacture has issues. We have already talked about the Ecoboost cons. But what about Chevy? Their V8s have notorious lifter failure across mutliple generations. I've personally known 5 people that have it happen to them. Dodge has issues with their frames braking
When you get to SuperDuty and Duramax you have the infamous Bosch CP4 fuel pump failures.
Tundra is a great truck. I use to have a 2003 4Runner with the 2UZFE. It's arguably one of the best engines Toyota ever made. Found in 4Runner, Tundra, Sequoia, Lexus GX470, etc.
It is considered a dinosaur by today's standards. These older designs like the Toyota 4.7 and newer 4.6 and 5.7 are older designs that just work. The biggest knock is the gas mileage. This won't work going forward, that's why Toyota is killing off their V8s and going twin turbos and V6.
I know everyone is following the news, guvment is trying to kill all of this off as soon as possible. That's why you are seeing more turbos, thinner oil, more plastic, and aluminum. The naturally aspirated V8s are quickly dying off thanks to guv.
The amount of technology, sensors and computer systems are quickly making vehicles less reliable. Everything is "fixed" with a software update.
I love my 2016 F150, but the aluminum is crap. It tears like a coke can. However, even Chevy who had a commercial back in the day making fun of Ford for the aluminum bed tearing, is now using aluminum panels...
The end of the day, it's all about money. Make the product for as cheaply as possible, make it work past the warranty period, then it's on you.