I suspect the cans are bulging is because they are made very flimsy these days. Cans are so thin you can bend them with just your thumb. I check cans for dents at the store and put them in the car myself so I know they’re not being thrown around. However, when I get home, a few are dented badly every time. So badly that I have to use them immediately. Those who are stocking foods long term should rotate more often because of this.
I also worry about those items sealed with just a piece of foil such as yogurt, fruit and pet food. Those are too easily compromised. Makes you wonder if the manufacturers are adding a boatload more preservatives to make them seem safe.
You describe a huge drawback of the precision of modern manufacturing, there is no overbuild, no margin in many items and utensils and tools.
A manufacturer can be so precise, that he meets just exactly the point at where the minimum yet adequate meet, which of course means more failures and in almost all cases, less durability.