> can achieve the same thing

Did you even look at echarts demos, or amcharts demos for that matter -- it's basically the same thing, but paid for: https://www.amcharts.com/demos ?

I don't have anything against charts.css, but it's like comparing a children's plastic toy to a real space shuttle. I spend most of my work hours developing a heavy business analytics application (not unlike Apache Superset), and it would simply be impossible to implement it with something like chart.css