It reminds me a bit of what Ansible got right: user communication. The underlying tech may have existed for a long time, but the genius is presenting it to a regular developer in a way that reads "yes, even you can understand ML, just using a little JSON". The contribution of that should not be understated, as has been clearly evident recently.
Yeah except it doesn't really work. It constantly breaks underneath you. The whole system has to be managed, e.g NixOS, or else it's a house of cards.