Does that matter if they have none of my data? I mean, they could log unencrypted traffic but for web browsing you should be forcing https wherever possible, so traffic logs would be mostly irrelevant. No doubt, they can see what you torrent but I can't imagine it matters that much if they have no data about you. They could certainly build a fingerprint based on torrents and unencrypted traffic but I feel like it may be too weak to be relevant. Maybe people worry about using the official clients? But you don't need to use them either, you can just establish a raw OpenVPN tunnel.