The previous stance of "if you try to get in just under the line we draw for you, we'll move the line" was ridiculous. What's the point of drawing a line if you're just going to move it every time someone gets close to it? Nvidia and government officials working together to determine what can and can't be sold makes the most sense and is how things should have been handled from the start.
That said, I still don't understand the point. It's not like higher-end AI chips enable things that lower-end chips don't. Everyone is running these chips in parallel to create exascale supercomputers, and you'll be able to do this with any datacenter accelerator Nvidia sells. The only thing this performance restriction does is make it so China will have to buy 20,000 lower-end GPUs instead of 10,000 H100s to build their supercomputers. Maybe US officials are just now realizing how futile their trade restrictions are.