I get the point. If your ISP is also not trustworthy, the situation probably does not change much for you. Then again, maybe the right solution is to look at how to get back trustworthy ISPs.
Which is a goal to strive for as well however this endeavor is still valid as the client can be mobile and transient across ISPs. So until you can trust all Is as you might come into contact with, having a secure and hardened client is the better of the two.
