My worry is that by using Tor at all you become a target for active monitoring, even if the content and destination of your Tor communication can't be decrypted.
Which is why it is important that many people use it. I don't think it is a viable strategy to MITM everyone (at least it will not go undetected), if that is what you assume being a target for active monitoring. Or to send agents to every house. If we are forcing them to do that, we have won.
