They hold “system binaries” meant for root user. It’s not a hard distinction but many if not most Linux fundamentals have their roots in very early computing, mainframes, Bell and Xerox, and this good idea has been carried into the here&now. Not sure about the provenance of this one, but it makes sense. isn’t /mnt /media different between distros? These aren’t hard and fast rules - some distros choose to keep files elsewhere from the “standard”.

/bin and /usr/bin, one is typically a symbolic link to another - they used to be stored on disks of different size, cost, and speed.

https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch03s16.html

https://unix.stackexchange.com/questions/5915/difference-between-bin-and-usr-bin

That is inherently a gift then, donation? No different that giving it away and morally lesser to giving to the poor. Breaks one of the rules.

Nothing was ever wrong with calling them “virtual assistants” - at least with them you’re conditioned to have a low bar of expectations. So if it performs past expectations, you’ll be excited, lol.