That was an unintended insult to Melania by DJT.
She is many levels above that person referred to as Jackie O in so many ways.
Perhaps DJT didn’t know what a sleep-about Jackie was purported to be when FLOTUS, just like her husband JFK.
I think that the problem is people of the president’s generation tend to romanticize JBKO. Younger folks tend to think she was a hot mess.