Not everyone agrees with that view. I for one would rather people spent their hard-earned money in a smart, slow and well-thought way than feel compelled by inflation to do so fast and lose.
Of course, you could argue that a hard cap is equally opinionated. But I think it's a much more 'neutral' position, where it deflates because of real economic growth, and you spend it because of your own time preference.
Bitcoin gains 200% of its worth each year on average.
Owning bitcoin, any investment you make that brings home more than 200% a year (+ fin. taxes - fiat inflation) when risk-adjusted is worth making.
Anything else is an objective loss, so you want to really assess what it will bring you subjectively before making it.
In other words, "given that you are basically paid by the financial system to hold bitcoin, any bitcoin you spend should be for something that you value more than what it pays", i.e a smarter investment.