wow, that's a wild round about argument to support closing down the herring fishery. In-River gill nets is a poor example to use with all due respect. Frankly one of the least selective fish catching technologies, and my own personal opinion is they should be banned from use in rivers.
Back to herring, if you follow the SoG data there was a significant resurgence in abundance to historic levels in the immediate past years. However, the natural mortality cycle now looks to be trending in the wrong direction, which if you follow the MSE management modelling that means harvest will be significantly dialled back down. Similarly, areas such as the WCVI simply failed to meet the core conservation objectives, so no fishery. IMO it is hard to argue against a science-based approach that allows a level of harvest when it is sustainable, and dials it back when the stock is not able to be sustainably harvested. Sure seems to be exactly what people have been complaining about not happening, when in fact that is exactly what is going on. I'm not a commercial fisher, never have been, never will be...but I support a commercial harvest where and when that can be done sustainably.