Great timing, I just started having that issue, alcohol dunk starts tonight!Great observations, sir.
However, with all due respect, an alcohol dunk after each shave will fix that issue... alcohol is hydrophobic (doesn't get along with water and moves it out).
I do this even with my replated because of the blade...
Also, CLR on stainless is perfect. If caught early there is no more harm done than taking 0000 wool to the top cap.
Oxidation is no one's friend with any steel...
even stain-less.
With plating CLR can cause problems, but on a stainless razor, there is no issue.
But the whole issue can be avoided by alcohol dunk of the head and drying of the handle.
It's an issue that makes plated razors more desireable, but let's face it, it takes 3 seconds....