perhaps, but like all other "captains" be it a 6-pack or a master, you need the "hours" and must validate this every 5 years. The 5 or 6 guys I knw with the masters license are great pilots.
When I got my masters license I had a friend who got his 6-pack at the same time. I didn't understand why he didn't go for the masters. Yeah there's a lot of material you need to know that if you never work on a ship or a tug boat you'll never need, but heck, I never intended to use anything I needed to pass my test. I just wanted the license. (there are 2 stories to that, 1 being that year the CG was cracking down on everyone even saying that if someone brought you lunch when you took them out fishing this was compensation and you therefore needed a license, #2 was I had a friend who always called me captain and wanted me to go for it, he passed suddenly so I did it in his honor)