The impressive part is them understanding and advantage of "opportunity cost".
In business, nobody, cares what you can do with "how little [computing] resources". Running a web services is not a circus act.
What matters is how effectively you do what you do, and that is not just a parameter of "using little computing resources". Efficiency includes saving time of your team, saving engineering pay, not evolving your system into a messy architecture, and having peace of mind. When a bucketload of RAM costs 1/5th of a developer's yearly salary, use RAM and not 2-3 developers for a year.
For that same reason, the fact that "anyone can brute-force it" doesn't mean a thing. It's like saying "anyone can save money". Actually it reminds me of this classic quote:
Gonzo: Well, I want to go to Bombay, India and become a movie star.
Fozzie: You don't go to Bombay to become a movie star! You go where we're going: Hollywood.
In business, nobody, cares what you can do with "how little [computing] resources". Running a web services is not a circus act.
What matters is how effectively you do what you do, and that is not just a parameter of "using little computing resources". Efficiency includes saving time of your team, saving engineering pay, not evolving your system into a messy architecture, and having peace of mind. When a bucketload of RAM costs 1/5th of a developer's yearly salary, use RAM and not 2-3 developers for a year.
For that same reason, the fact that "anyone can brute-force it" doesn't mean a thing. It's like saying "anyone can save money". Actually it reminds me of this classic quote:
Gonzo: Well, I want to go to Bombay, India and become a movie star.
Fozzie: You don't go to Bombay to become a movie star! You go where we're going: Hollywood.
Gonzo: Sure, if you want to do it the easy way.