Which, to be clear, seems entirely justifiable because software rendering exists. If Nvidia wants their cards to work well on an all-free-software stack, they

Which, to be clear, seems entirely justifiable because software rendering exists. If Nvidia wants their cards to work well on an all-free-software stack, they can provide a free software driver. If users care about making an unofficial driver work, they can do the work or fund the work. Chrome is just trying to get web pages on the screen and it doesn't seem like it's worth the boil-the-ocean level of effort of taking responsibility for implementing a reverse-engineered graphics driver when they can just get web pages on the screen using software rendering.