I hear where you’re coming from lorlie, but light weight doesn’t necessarily mean flimsy. Some of the most expensive bicycles and wheelchairs on the planet are lightweight metal alloys.
When mountain biking in Germany I “got it” about the fuss and expense of buying a super expensive ultra light bike after peddling my fat arse up a few big hills on my modest priced bike. Every extra ounce on the weight of the bike counts.
Wheelchair athletes use ultra light, but durable chairs. These chairs cost more than power chairs because of the expense of these lightweight metals.
That said, if I’m the one thousands of feet in the air, it would be hard for me to reconcile an ultra thin ultra light vessel as being durable and safe.