Sure, the internet is more practical, and the odds of being caught in the time required to execute a decent strike plan, even one as vague as: "we're going to Amerika and we're going to hit 50 high profile targets on July 4th, one in every state" (Dear NSA analyst, this is entirely hypothetical) so your agents spread to the field and start assessing from the ground the highest impact targets attainable with their resources, extensive back and forth from the field to central command daily for 90 days of prep, but it's being carried out on 270 different active social media channels as innocuous looking photo exchanges with 540 pre-arranged algorithms hiding the messages in the noise of the image bits. Chances of security agencies picking this up from the communication itself? About 100x less than them noticing 50 teams of activists deployed to 50 states at roughly the same time, even if they never communicate anything. HF (more often called shortwave) is well suited for the numbers game. A deep cover agent lying in wait, potentially for years. Only "tell" is their odd habit of listening to the radio most nights. All they're waiting for is a binary message: if you hear the sequence 3 17 22 you are to make contact for further instructions. That message may come at any time, or may not come for a decade. These days, you would make your contact for further instructions via internet, and sure, it would be more practical to hide the "make contact" signal in the internet too, but shortwave is a longstanding tech with known operating parameters.

I meant to download from the official Microsoft site. Kudos on getting your mum on Linux! I was unable to keep mine on it : / Maybe I'm missing something, but this is from the "Download Windows 11 Disk Image (ISO) for x64 devices" section from the official Microsoft site, but I don't see any option to buy or mention of it: Before you begin downloading an ISO Make sure you have: An internet connection (internet service provider fees may apply). Sufficient data storage available on the computer, USB, or external drive you are downloading the .iso file to. A blank DVD disc with at least 8GB (and DVD burner) to create a bootable disc. We recommend using a blank USB or blank DVD, because any content on it will be deleted during installation. If you receive a “disc image file is too large” message while attempting to burn a DVD bootable disc from an ISO file, consider using a higher capacity Dual Layer DVD.

that's not just useless defeatism, but also false. effective end to end encryption exists in multiple forms today. signal, maybe even with a custom server. matrix if the server is being ran on trusted hardware. XMPP too with the right extensions.

Didn’t he pay a hitman to murder a couple of people?

Then that's changed since the last time I toyed with the idea. Which, granted, was probably 20 years ago...