I think to add to the Jackie Kennedy comparison, Melania herself said one of the First Ladies she really admired was Jackie Kennedy & that she hoped to emulate her.
I don't think anyone made any erroneous comments about Jackie Kennedy's inaugural outfit as compared to Melania's outfit. No one said their outfits were the exact same or exact color - just that the Ralph Lauren outfit evoked an overall feeling of a style similar to the kinds of outfits Jackie Kennedy wore.
That's all.
If the Ralph Lauren dress didn't remind everyone of Jackie Kennedy (NOT what she wore exactly to the 1963 Inauguration but her "style"), then that's fine. Not everyone is going to agree on everything.
No one is trying to prove anyone wrong, but, instead, attempting to explain the difference between "overall style" & an exact comparison of the 2 outfits. And, again, I think most of us are only talking about the wardrobe - not what either one of them did or does while she's in or out of her clothes.
Women are going to be judged - and, sadly, probably most harshly by other women.