I think they could get a close-enough effect by removing the horizontal lines on the text glyphs themselves. This would still keep the colorscheme and slight glow, but drastically improve readability.
Then, with all due respect, you should not be anywhere near the design or evaluation of accessible systems.
There's people reading this blog with all types of devices, screens, lighting and range of visual acuity. Even if you're blessed with perfect vision and excellent displays, it should be obvious that readability has been lowered for no obvious reason.
The point of a blog is for people to read it, so it fails at its foremost job.
I wasn't saying that I thought it should be adopted as a standard for others to follow - just that (somewhat weirdly) I personally find the code segments on that page quite easy to read.
There is a time and place for text and retro-CRT effects, this isn't one.
There's people reading this blog with all types of devices, screens, lighting and range of visual acuity. Even if you're blessed with perfect vision and excellent displays, it should be obvious that readability has been lowered for no obvious reason.
The point of a blog is for people to read it, so it fails at its foremost job.