I didn’t really know anything about One Piece until I watched the live action show but it was a lot of fun. The biggest thing for me was the scoring. It’s well scored and has the same swashbuckling feel as the original Pirates of the Caribbean movie!
The answer I saw regarding Jon Stewart was in response to the same question comparing Jon and Bill Maher with his recent announcement. That was that Jon Stewart was not a member of the WGA during the last strike and continued without his writers to keep the non-union workers getting a paycheck.
If true, it doesn’t necessarily make it ok, but it also doesn’t hurt that Jon Stewart seems likable and didn’t staunchly defend his decision, in fact indicating it was very much a struggle for him to make it.
Seeing movies in the theater is overrated and they are far more enjoyable at home.