Fresh Water Cooling

[Para]

In years past, for salt water operation an option called 'fresh water cooling' was really popular. It involved a bit more mechanical complexity, but the reward was that the 'core' of the engine was not exposed to salt water.....I assume you all know what I am talking about

In newer ads for boats I do not see much mention of this anymore. Have the engine manufacturers gotten so good with corrosion resistance that fresh water cooling is no longer neccessary?