Welcome to NIMBY land where even a bike and pedestrian bridge is seen as the devil
Personally I love the idea of more bridges, especially in that area where the small islands ( man made ) are very isolated due to their military past..
And the design is great too - so I hope the NIMBY's will lose this one!
They will have a limiting effect on the boats and ships movement in the area, no way of getting around that, but as that is a minority compared to the many people who bike or walk I think they will have to accept that, it's not like the canals are shut completely off or anything..