Do you know that it is the same people holding these conflicting stances?
Seems like HN is a big place, room enough for both cheap devs and more well-heeled devs.
Intuitively I'd guess that they're very different audiences. I'm sort of near the type of person who would shell out for ease-of-use stuff like the same theme across editors, but also the type of person who would even want that.
I suspect a person similar to me would also pay a bunch of bucks for, say, a screen arrangement app for MacOS, or a way to more quickly pair AirPods (ToothFairy).
It's a type of user that has no problem paying for convenience, I suppose?
That said, $79 is too steep for me to pay for a set of themes, even though I do really like this one.