The engine is engineered for forced induction and it’s rated power output. That means it has to meet the same durability testing as your “V8”, or any other engine in an F-150. Your claim that the 3.5 runs “at 110% all the time” is absolutely ridiculous and shows that you don’t understand these engines nor do you have any experience with them. In the majority of driving the engine is under vacuum.Unfortunately I'm old so I remember the first diesel by Ford and what a boat anchor it was. My point is when you design a motor from scratch or otherwise and you start squeezing every bit of horsepower and work that motor 110% all the time your going to have issues. Ford v6 turbo charged engines have issues. It's not perfect it will not run 500k miles just changing the oil. The blowby is now creeping up on them and they are having issues at 50k miles. Give me a v8 any day don't like can't stand the v6 and will not own one..
You’re making unsubstantiated claims that you can’t back up. There are no “blow by” issues at 50k miles, or 200k for that matter. Nobody is saying you need to like any particular engine, but making baseless statements only shows your ignorance.