I said that the low level of protection would not provide the expected benefits. I'm not saying that it will do nothing; protecting something at some level will provide benefits.
One of my colleagues compared MPAs to bank investments. It depends on the interest rate you get. The more risk you take, the more benefit you get. It's a bit of the same thing with MPAs. If you protect an area and you don't go there, you don't fish there, and you don't do anything, this area has more ability to develop and grow than an area that would be extracted and damaged—for instance, where you get the bottom-contact gear that will destroy the habitat.
Again, that's something that has been well studied over the last 10 to 15 years.