There's a difference between encroaching on your sovereignty (i.e. Making a law against you blocking ads, which I strongly oppose) and what you're doing being unethical.

Do you really think everything you can do that takes advantage of legal rights you should totally have is ethical? If that's the case, which of the following do you agree with:

A. It should be illegal to cheat on your significant other.

B. It is totally ethical to cheat on your significant other.