The President, any president, has better things to do with his time than “type”.
That’s what secretaries and speech-recognition software are for.
If he doesn’t already know how to type, he’s got really, really, really better things to do with his time than learn to type.
Really, this is the type of attack that does not even dignify a response.
Even if the Democrats roll out a disabled person who can work a computer with his three remaining working toes, it doesn't matter.
Sorry about the rant - but I remember when I first got of grad school, being asked if I could type at job interviews. I always said no. Got a great job, where there was a group secretary. (Yes, I am that old.)