Yes, there are several options for excluding files and directories. There's the --exclude option to exclude a file or directory. There's also the --exclude-from option that lets you specify a file that contains a list of files and directories to exclude.
There's not much point in backing up games that are easily downloaded again. Just backup the saves and settings.
Yes, you can still dual boot. I would recommend using two drives since it will make things easier. You can even use secure boot and bitlocker if you want to.
It's a WebDAV server, so it's more like FTP than Syncthing.
UHD is just a pain because it's hard to find a compatible drive.
I've never had a normal bluray that I couldn't rip with MakeMKV. It's the UHD blurays that are a pain to rip.
It will probably just push more people to piracy. The streaming companies have been doing a good job of that lately.
It wouldn't surprise me if that was the case when the satellite equipment was originally installed. SDRs only became available fairly recently. Before that, you would either have to have the knowledge and ability to build your own equipment or have a lot of money.
For email, you just pay for a host that will let you use your own domain. It's usually a lot cheaper than getting a static IP and you can easily switch hosts while keeping your email address.
It's not really even worth attempting to self host your own outbound email these days. It's a lot of work getting the big email providers to accept your email and if someone has ever sent spam from your IP address, you are pretty much screwed.
The UK should just block sites that don't comply. They have no business trying to fine US websites.
The energy density of sodium-ion batteries keeps improving. They are getting pretty close to LiFePO4. Chinese EV manufacturers have started using them. Not everyone needs a super long range, especially in places where there are lots of charging stations available.
I think the future for EV batteries is going to be sodium-ion for quite a while. They are good enough for most people and the materials to make them are plentiful.
It's a known issue. They are working on a fix, but it's not ready yet. It will require an external JavaScript library though.