"I do not use a graphics driver"

Maybe this is not clear. I apologise for any ambiguity

vga(4) can be referred to as a "graphics driver"

For example,

https://man.netbsd.org/vga.4

But it does not support (non-text) graphics

It only supports text

The blog author is using a graphics layer such as X11 or Wayland along with a terminal emulator such as Ghostty on top of it

I do not use those things