Not necessarily. People are pretty much getting caught cause of poor OPSEC and correlation attacks(esp correlation attacks due to bad OPSEC).
The game becomes a bit harder for the gov folk if your browser is locked down and your just being a client. Running a hidden service is a bit of a different ballpark and takes a significant comb over to make sure you are running a tight crib. Even the NSA admitted in their slides that something like TAILS + TOR is basically GG and labeled a 'critical threat to the potential of intercepting encrypted communications' or some shizzle like that.
The key to dodging correlation attacks is seperation of duties. In other words, apply common sense and then apply the logical extremes. You shouldn't hack from home, ergo you shouldn't do ANYTHING related to yo extracurricular shenanigans remotely near your house. And don't be bringing home there either. No facebook at the same MCDonalds you been poppin boxen at, even if you be using a diff laptop real slick like, ya feel me?
Back to da topic at hand, I'd still go with TOR over Freenet for going hard in the paint, if only mo mofos be lookin at it real good ya feel me? I know what how the NSA attacks TOR, I dont how the NSA would attack Freenet. The devil ya know, amirite?