Wouldn't this invite some kind of oyster-predator or oyster-disease? Biodiversity would be more sustainable ...
This is alluded to in the article, they want wild oysters to join the population. Most likely to increase genetic diversity. I would imagine this is a good start, people can identify with oysters and they can then start to use funding to diversify the biosphere down the line.
I assumed that these oysters were grown by locating a rare wild oyster, or two, and having them spawn in captivity, producing huge numbers of offspring in a generation or two.
So they would be "wild oysters" genetically speaking. Although less genetically diverse than the whole wild population.