It looks exactly like it.
I've seen exactly that same dynamic play out with other items of clothing, and even with shoes. And the thing is, when you're poor it's not that you can't afford expensive jeans if you really tried, it's that of necessity if you have that much money to spend on something you have other higher priority needs (things that you've just gone without, or things that you've stretched beyond their useful lifetimes but haven't replaced because you didn't have the money), and not on clothes or shoes.
But you see exactly this dynamic play out in housing, transportation, and so many other places. A poor person with bad credit is going to end up being forced into having to take a high interest loan in order to buy even a low quality car. And they're going to have to dump a lot more into maintenance and refurbishment costs than someone who can afford a nicer car. Over several years they may end up having dumped more money into that crappy car and the financing of the loan than it would have cost to buy a much more reliable car if they had the money. I bought my car almost 10 years ago, and had it paid off in less than a year, I've put 100k miles on an incredibly reliable vehicle with almost no spending on maintenance. That saved me a ton of money on financing costs and in maintenance costs. I've seen tons of other people who couldn't do that and ended up buying less reliable vehicles for a lower initial cost but have much more maintenance and end up having to buy yet other cars more frequently. And if you take public transit, you instead spend a ton of money on that without having anything to show for it.
Housing is even more extreme. Being able to afford to live near where you work can save a ton of money on travel costs over the long term. And being able to invest in purchasing property puts you way farther ahead than being forced to constantly rent.
The point of that little quote is that the difference between rich and poor is very much non-linear, and not merely a factor of the rich having more money. Having more money means being able to spend money in ways that produce solid returns. Buying goods of high quality and high longevity which result in a net savings down the road. And buying things of lasting market value which serve as investments.