These are fun little CSS Art and I agree this might have become a niche topic but that does not mean it's lost. These little graphics in the early days is what pulled me towards learning CSS even better and I hope discussing this now, today, would help new web developers get excited for CSS as it did for me back then.
It seems like you have nothing to discuss regarding the original link and it's obvious from other comments that people still find this interesting contradicting your whole point.