Your examples confirm what I said. Your "30 year" aircraft spends 2/3rds of that time literally not functioning as an aircraft.
As for my "shiny iPhone" (I don't use an iPhone) and "Good luck" using it 8 hours a day: I don't understand the hostility or how you've arrived at the belief that 8 hours a day is a long time for a phone to operate. My unremarkable phone reports a current uptime of 180 hours. You're suggesting that being unusable for 16+ hours a day is the norm, but here on Earth, if phones routinely stopped working as phones for more than a few minutes a week people would riot.
The point is that there are different kinds of machines in the world with different constraints and demands in their designs, and different operating models for how they are used. You seem to be trying to make a better/worse argument out of things share practically nothing in common and it doesn't work at all.
As for my "shiny iPhone" (I don't use an iPhone) and "Good luck" using it 8 hours a day: I don't understand the hostility or how you've arrived at the belief that 8 hours a day is a long time for a phone to operate. My unremarkable phone reports a current uptime of 180 hours. You're suggesting that being unusable for 16+ hours a day is the norm, but here on Earth, if phones routinely stopped working as phones for more than a few minutes a week people would riot.
The point is that there are different kinds of machines in the world with different constraints and demands in their designs, and different operating models for how they are used. You seem to be trying to make a better/worse argument out of things share practically nothing in common and it doesn't work at all.