Clearly you can’t be convinced that the font looks OK, or even that it looks OK to people other than you. That isn’t my goal here. I am arguing the feature that was previously available and no longer is available was useful and would continue to be useful, and is not black magic as you claim.
FYI I was able to use Font Forge to achieve it. I used the “Auto Width” metric on every character except space. This gave me a font that is the same as it was with the old font generator: exactly 1 pixel between each character. And yes it is exactly one pixel. Is this still black magic, or is this suddenly OK to you because it was done in Font Forge instead of through the lvgl font converter?
Not many people are font savvy enough to do this, even developers. The amount of simple questions this forum gets is evidence enough of that. Getting a suitable font to work isn’t even a blip on the radar of the total work that needs to get done in a project. But, it is still a necessary step and a monospace font is useless on a tiny display. If the tool that already exists to convert a font could also do this, then that other work can be done much sooner without having to fiddle around with a font. You also wouldn’t have to answer this question again should it come up.