Only if you don't use it. It's very worth it, the first time you do use it. It's cheap insurance.
Read the fine print. There are a number of exclusions, which grouped together, effectively state that the plan is under no obligation to do anything for you. You are entitled to six hours of counseling, but ultimately the representation by the plan attorneys will cost you. It also doesn't cover any appeals.
Because you are dealing with administrative law when considering certificate actions and enforcement proceedings, you have nothing but appeals. The plan quietly states that it doesn't cover you in the areas you need it most. Weather it actually does, or not, is another matter. The point being, it doesn't have to cover you.
The insurance services offered through AOPA are surprisingly similiar, and don't cover you if you're flying an airplane, or in an airplane, other than as a passenger on a commercial carrier. I called AOPA to query them on that, and they didn't have much to say.
Then again, AOPA does a fine job of talking about themselves, but unfortunately doesn't have a lot of punch where it really counts.