I think Trump remembers the reporter and what his condition is. I'm not outraged by it, but I also don't believe he's being honest in his denial.
believe what you want
P.T. Barnum had you pegged.
“You got to see this guy” is a turn of phrase used by many and doesn’t always mean what you exclusively seem to think it means. And the You Tube video simply shows him imitating a flustered individual. If you want to see more into it because you don’t like Trump, so be it.