“There are Canvas2Ds in cars, on fridges, and in space (really).”
98% of canvases on the web use the 2D context, and the headline feature in 2022 is a rounded rectangle. Drawing one used to take a beginPath, a stack of lineTo calls and four arcTo calls. CSS has had border-radius for over a decade. The drawing API behind nearly every canvas on the web spent that whole time behind CSS.