We're not into plastic, either, but use silverware from the BX or Walmart that is made, no doubt, in China. We replaced a set when forks started breaking but they didn't have rust. We use only fresh water to clean in the sink, and dry well. Some 'flatware' was used nine years on the Regal 26 then transferred to 8 years on the TC55, but no rust.
Even the very best SS can get 'crevice corrosion' where a 316 SS eye for example gets no O2 and some rust streaking. I don't think this is what your poster was seeing. We've heard lots of saltwater boat rust complaints over the years, before, but this is a new one!
Buy what you like, but worry more about the internal engine anodes in your outboard motor, if you absolutely must worry about something! Corrosion inside that costs much more to replace than Chinese forks.
Happy Shopping!
John