They are probably failing to get enough users, so they will attempt to squeeze as much money from their existing users as they can before they go under.
I occasionally find 3.5" floppy disks at the local thrift stores. There are usually new old stock disks on ebay too.
The USB floppy drives usually only support IBM formatted disks and are useless for data recovery. For any other formats, a Greaseweazle will come in very handy.
There is potting compound with high thermal conductivity for things that produce a lot of heat. A YubiKey hardly uses any power, so heat should not be an issue.
The main downsides of potting are that it makes repair practically impossible and it can add a lot of weight if there is a large volume to be filled.
Encasing the circuit board in epoxy. It makes it very difficult to access components without destroying it. It's also great for water proofing and increasing the mechanical robustness.
They can shut down the ground stations in Brazil, but they can't block the laser links. They could also try to jam the signals, but SpaceX now has years of experience working around jamming in a war zone.
Recent versions of Android make it much more difficult for a background app to access the microphone. There will be a notification if any background app is using the mic or camera.
AV1 is really only practical for content that has a high quality source like a bluray release. Most streaming sites aren't using AV1 yet, so anything from them would have to be transcoded. Transcoding a low bitrate source to another format will cause a loss in quality. It's not really worth it unless you want really small files to watch on your phone.
AV1 hardware acceleration is becoming fairly common, so I wouldn't be surprised if the streaming sites start switching to it soon.
Sure, you can still own digital media, but you can't sell or trade it like you can with a physical copy.