A VPN is just a relay. Copyright trolls know you are uploading because you are connected to the swarm. Whatever IP address the swarm sees, the trolls will also see.
You can make it harder on them by selecting a VPN provider that doesn’t log. You can make it harder for them to put pressure on your VPN by selecting an endpoint in a location unfriendly to trolls. Make them cross multiple jurisdictional boundaries if they want to get to you.
Trolls will look for the best return on their trolling. If they ever decide to come after VPN providers, they will probably target the one with the largest number of pirates in their jurisdiction. Consider a VPN provider outside Germany and the EU. South American or Asian VPN providers might be good choices for you.