Passive cooling is generally better for reliability if you can make it work, since all active airflow systems will degrade as dust and hair works into the airflow paths.

Make the chassis out of aluminium so the whole bastard is a heatsink.

They already do. My thinkpad T14s is incredibly thin, and it can dissipate 400 40 watts of power. My P1 dissipates 160+ watts and it’s also very thin.

Well there's no shortage of those, and they're unusually cheaper too (unless they're specced out). I prefer a thin silent one myself, so I welcome this innovation.

Appreciate the link. I've got a hand-me-down Ionic in my house, and knowing that I can skip running it for basically the same effect means I can save a couple of cents on my electricity bill.

Gonna take another look at those IKEA tables with the HEPA filters built in. Those seem handy to avoid having to dust so often.

the reason people recommend against vacuuming a PC

A regular vacuum isn't doing anything with ions or high voltages. Moving air can generate potentially harmful static electricity, but usually the reason people recommend against vacuuming a PC is because if you spin the fans doing that, the motors inside turn into generators and drive current back into your PC parts that could damage them.

That's correct.

It Fannot. Or it Fan't.

The "fan" sits inside a faraday cage.

Bladeless Dyson's have the fans hidden, as far as I know. But they still have a bladed fan in there.

They aren't actually bladeless. The fan is just hidden in the base.

Those things have a fan with blades, just stuck in the base.