Pluggable transports are intended to stop your local ISP detecting or blocking your connection to Tor: https://gitweb.torproject.org/torspec.git/tree/pt-spec.tx

Pluggable transports are intended to stop your local ISP detecting or blocking your connection to Tor: https://gitweb.torproject.org/torspec.git/tree/pt-spec.txt https://gitweb.torproject.org/torspec.git/tree/pt-spec.txt While I agree that you can mask your exit from the Tor network via an additional proxy or VPN, that's not the role of pluggable transports. They're only for connecting in to the Tor network, not out from it.