Charts.css is a new approach to creating charts using pure CSS, which aims to simplify the charting process and improve maintainability compared to traditional libraries like Chart.js. However, users have expressed concerns about the current lack of functionality, such as axis labels, and are debating the effectiveness of using CSS versus more established methods like canvas or SVG for chart rendering. The appeal of its Tailwind-like ergonomics suggests a trend towards design systems that prioritize efficient, maintainable code.