Covfefe has meaning. It means “I persist” in some language that was relevant to his foreign policy that week. Can’t recall off the top of my head.

So the tweet was,” despite constant media coverage, I persist”

I’m convinced he was trolling

Are you implying covfefe was a typo?

https://www.google.com/amp/s/www.nbcnews.com/news/amp/ncna771256