Do people really care that much about editor fonts? I just use SF Mono and call it a day. I've never had a problem where the font, of all things, was the main cause of something not working for me.
I don't think I ever had _a problem_ with a font, but that does not mean I do not want to spend a bit of time and effort to improve my experience. I could probably also get away with a much worse keyboard or monitor and be just as productive. But would I enjoy it just as much? Probably not.
Yes, there might be billions of free fonts out there, but the cost of that font is also not exactly making a huge impact for me that I have to save money there. Why would I start saving with the font all the sudden when I spend more money on literally everything else? Does not really compute to me.