This seems like a dumb question, BitTorrent absolutely is still relevant and probably the most popular method of file sharing in the scene. Foss groups use it too for distributing ISO files for Operating systems, and it might even be used as the video hosting provider in future Fediverse YouTube alternatives (I've heard talk of a video hosting platform on Fedi which uses activitypub for everything else but hosts videos via BitTorrent) pretty cool stuff.
So yeah BitTorrent is still relevant, and it makes sense since if it isn't broken why fix it? Not to say that it couldn't be better, the biggest problem with it is the anonymity issue, but until someone makes something better BitTorrent will continue to be popular, and the ideal choice for decentralized file sharing, especially in the piracy scene.