I have a granddaughter who doesn't love "touchy" stuff. Luckily for her, I totally understand it.
Some people don't get enough friendly touch in their lives, and what might look aggressive to one person might be fun to another—arm-punching, back-slapping, hand-holding, pushing back and forth while walking, arm-in-arm walking, playing slap games or thumb wrestling—those are all touching, and life can be warmer and better WITH those things than without.
It's good for parents (and grandparents, and friends) to be aware that different people are different ways.
photo by Cátia Maciel