Poor guy. Lot’s of distractions and loud noise on the ramp. Throw in some humidity and heat... and it’s worse.
I used to drive them when I was young. Don’t forget how slippery it gets when it rains. Guys used to whip the train of carts behind the tug when it rained. I was in LA and worked for Delta for a year. Didn’t want to work for an airline the rest of my life.