I feel so because, saline water has more more electrons and because of that there will be oxidation will take place faster and hence the overall process will speed up. Is this explanation good enough or there's more to it?
To quote an educational source:
Water is the enabler of fast oxidation of iron so freshwater will also cause rust. However, salt water is a very good conductor (lots of dissociated ions) and so there are a number of electrolysis reactions that tremendously accelerate corrosion in salt water.
which means, in essence, that aqueous NaCl is a good electrolyte that can also promote so called galvanic corrosion reactions.