At the risk of asking an incredibly stupid question, but if I only ever torrent video/audio, scan everything I download with defender, and only ever use a recently updated version of vlc, what's the risk?
I remember getting viruses in ye olden days, but afaik the main problem is malware now.
Risk is practically nothing in your case, because you're being careful, and know what you're doing. You won't run a binary when you were expecting the Barbie movie, for example.
If you were downloading binaries, then your risk is significant, but even then, unless you're downloading new releases immediately, it's likely that your antivirus will catch the new popular ransomware after a few days, when a few thousands of people have become infected. Governments won't employ valuable zero-days on any rando who just wants to see their new isekai episode.
This is about a game, which is a .exe. In your case, it's probably not an issue, but games will be. Pdfs also had an issue for a while, but I think that's solved. As far as I'm aware, there aren't any video/audio codec or VLC issues to be worried about though, so you should be good.
Not what they're asking, read closely. They're curious about the risk from using pirated audio or video material (not executables). VLC is only mentioned as their player of choice, so it's easy to assume they've already got it installed.