Most of them might not be creators though, just users of said software.

Developers should be using hardware comparable to what their intended audience uses, at least some of the time. It's hard to effectively address the needs of your audience if you aren't experiencing their problems.

I have to disagree, devs should use hardware appropriate to their development environment. They should test on hardware appropriate to their target environment (or at least a simulated version of it). Insisting on developing on underpowered systems can block you from using some more useful development tooling like many profilers and some debuggers effectively or even entirely. You need to know that it works in the target environment, but if the target environment is a 2005-era CPU because the customer wants a "ruggedized" laptop (aka, overpriced old hardware in a very tough case), there's no reason to restrict your devs to one core and 4GB of RAM for their development tools.

That's why I said "at least some of the time".

Creators in poorer countries also aren't swimming in money.