[stupidcar]

While it's true that a LAB gradient will produce a more perceptually uniform gradient, it doesn't alter the article's point that sRGB isn't a colorspace. It has an associated nonlinear gamma function that is used to help compress values to 8-bit, and the result is that interpolating between two sRGB values is not the same as interpolating between them in a proper RGB colorspace, with the result that you'll get brightness problems.

So yes, LAB will produce more perceptually uniform gradients than RGB, but browsers are exacerbating the problems of RGB gradients by not implementing them properly.