I didn't know that a smug sense of superiority was a pre-requisite....oh wait forgot this was the internet.

I mean, it's not like, rocket science to basically boil down your page (which I don't fundamentally disagree with) to "we should put these things in a jail". As I already commented here I implement this for myself at the whole operating system level. There's lots of ways that have existed for a very long time to do things like freebsd jail or chroot or similar so it's not really a novel concept.

Edit: I am completely in agreement with you that we need to remind people that running a lot of these harnesses/agents and LLMs gives them access to everything in your user profile. Some of works so well now, so rapidly and so painlessly that it's easy to forget about what could happen if it went wrong.

There's no smug sense of superiority. While we are a Linux shop primarily, we always admired BSD jails until Linux had proper containers, and installed BSD systems where we needed strong borders or boxes.

Also, we need to accept that some of the "new" problems we face are already solved well decades ago, and many people are rediscovering these solutions...

...after yelling to the very same people who were kindly pointing the right direction for being old-school, backwards and luddite minded.