I don't like the cynicism here.
* Yes, performance numbers would be helpful.
* No, this is not new, and for most applications, not practical.
The basic point is that yesterday, I couldn't run a large model locally. Today, I can, in about one pip install and 20 lines of code. Yay!
There are a lot of things which are convenient to be able to test locally. YES it takes overnight, but if you're trying to confirm if there's a business case, that's often good enough. For a single compute (or even just a few), this is also simpler than spinning up a cloud machine.