That is still an option, but there is a tradeoff. There is a button in the software to enable on-board memory mode.
You lose all your key assignment controls and fine-tuned DPI settings, but it stores on the device. If you want to have those features available, the mouse needs some software on the PC to talk to for more fine-grained control.
The UNs mission is mostly to exist as a forum for the leaders of a nation to discuss issues in a known-safe environment. It’s not meant for oversight, nor is it meant to police anything, even if it is sold that way sometimes.