Resetting the “time since last being told I don’t know shit on the internet” back to 0 once again…

I already have an existing and working setup used for other apps, it’s close to the one described in this blogpost. Yes, it’s complicated and inefficient, but it has reasons to be. I want to keep my qBittorrent configuration as close to this setup as reasonably possible for consistency. If your point is that it’s counterproductive to follow this setup then… fair enough. I can just route traffic from the VPS to an exposed port on the local qBittorrent container over Wireguard, but that wasn’t my preferred solution.

Running a torrent client through a proxy doesn’t isolated a process.

I was talking about network isolation, not process isolation.

make sure your traffic is routing there properly

That was pretty much what I was asking for help with.