I was speaking more to the willingness of vendors to support. It's debatable how well WebGL(2)/WebGPU are designed and especially implemented. But it does seem like most evolutionary features, if they make it to browsers at all, would come from the WebGPU path. Not saying the reasons for that are good.
If you're talking about open source projects or decisions by some consortium, that's not always true...or at least one business is pushing their concerns at the expense of others.
An easily remembered example is what happened (at least from Pieter Hintjens' perspective, as he wrote/complained at length about) between AMQP 0.9.1 and 1.0
