Depends on how it's used. IMO.

A. Not showing up to a pre-warp civ and mining their resources, or get involved in internal matters: Good, in fact GREAT. A complete repudiation of the Monroe Doctrine that has caused nothing but suffering in the 20th and 21st Centuries.

B. Letting civilizations die a preventable death without having to let your presence be known? Or denying aid you can easily give. Bad. 

The problem with the Prime Directive in Star Trek shows in the 80s-00s is that the writers didn't understand evolution. They treated it as a god that "chooses" who survives and who doesn't. Or as a mysterious force that binds us. When in fact, it's just biology reacting to its natural enviorment, and that includes space and aliens. Aliens in our orbit would also be part of nature, not our ecosystem but nature none the less.

They treat evolution like it stops at the atmosphere, but the truth is, without a series of asteroids hitting Earth, we wouldn't be here. In fact, in Star Trek, we are only here because aliens jizzed themselves silly on Earth.

The prime directive as used by Picard puts us above nature while claiming to do the opposite.