It’s not about the spelling… Trump has trouble reading so he always sounds things out that he doesn’t quite understand or when he’s unsure of himself. It’s a pretty standard coping strategy for people who are still learning to read.

He does this constantly: Whenever he slows down (weirdly) during one of his endless rants it’s usually before a word he has difficulty with. Examples of words he regularly has trouble with: China nuclear, Venezuela, felony

In the past he’s said, “United Stage”, “respectered”, and often starts making noise sounds like, “ding!”, “boom!”, and “bam!” to distract from his mistakes… Like some elementary school kid in class that’s been forced to read out loud.

My personal estimate is that he has somewhere around a 4th or 5th grade reading level. After reading this, if you hear one of his speeches it will suddenly become so obvious that he has trouble reading that you’ll wonder how you never noticed before.

Everything that’s ever appeared on his teleprompter is the simplest words possible except in cases where avoiding complicated words is impossible. I’m certain he practices these special words with his handlers regularly and tries to repeat their emphasis of certain parts of words which is why he says some words strangely (e.g. whenever he says “China”).