Torrents require you to own a PC (there's no way to torrent on a phone or smart TV AFAIK), Usenet requires you to have some tech knowledge, same goes for Plex / Jellyfin.
I feel like piracy nowadays is a lot harder for an average Joe than it used to be. People now expect that they can turn on their TV, open an app, enter a title in the search box and start watching, and P2P just doesn't work that way.
Often they have better ui than legal streams. Auto play/next, auto intro and extro skips, better recommendations, full search engine features, subtitles, etc. Without ad block they can be a banner ad mess, but with adblock there is none.
I have no idea for "smart tv", but at least for Android phones, F-Droid has plural torrent clients listed:
https://search.f-droid.org/?q=torrent&lang=en
Now, actually 'torrenting' on a phone also sounds like a recipe for rapid battery drain unless the phone is also plugged in to a charger, but that is independent of the "ability" to do so.
I haven’t used them, but I think there are pirate sites that work just like steaming services. I don’t know a lot of details, but I think it’s still BT on the backend, and relies on a fast download and maybe it can prioritize chunks to get the start of the movie first? Not totally sure. But it seems a VPN would be important for that. I would say using a VPN requires some degree of savvy, but at the same time, it seems every other YouTuber out there is pushing a VPN app.
Where I live, they search for "watch blabla online 1080p free". Way less time consuming than actually using streaming services or torrenting.
Also, you can easily torrent on Android.
There are some piracy subreddits you can look at to get some idea, but there seems to be easier ways than that.
Laughs in android