In that guy's defense, you as a user have EVERY right to be pissed if your machine thrashes so badly that your system stops responding in an era of 32 Gb of RAM and 8 core CPUs.

Relatable

In tech support we called the mouse the "math coprocessor", and any interactions with it sped up all computation.

Could be low system entropy while generating a hash or key and the mouse input is helping it.

There was some program that was asking you to move the mouse while it was generating a seed or something, but I don't remember which one.

Last Windows 11 update got stuck. Really stuck. Killed it with the off switch, it rebooted into the logo screen and did nothing else. I waved my ventoy USB at it and threatened to give it the Linux treatment and went to sleep. This morning it booted as if nothing had happened?