As long as private trackers have absurd seeding rules and require you to sign up (initially) without your VPN active, I won't be touching them with a ten foot socket.
1. Getting into the tracker requires ratio proof from other reputable trackers.
2. Freeleech becomes less common, which makes maintaining a >1.0 ratio difficult without a seedbox and IRC based tools (eg, autobrr).
Why are you so afraid of them knowing your IP?