What is your definition of “worthwhile”?
My definition of worthwhile includes value; such as: what do I gain by spending 3-4 times more for double the useable power vs. paying 2 times more for double the useable power?
What I value and what you value are probably different. I own many Li batteries and for what I use them for and how often I use them I am willing to pay the price. But to spend $300 plus for 1 more day of camping “occasionally” - I’d just buy another $100 battery if and when I needed it.
But that’s just me and my values.