What do you think of me  poking holes in the plastic wrap of packaged meat when I was little?
That seems mean. Why would you poke holes in packages?
It was just because it gave me satisfaction
It's okay to act childish at that age, but you should definitely teach any other kids not to do that.  It's unsanitary to get meat on your fingers, and the meat can spoil if the plastic wrap is broken.
But kids should be able to do it right.
No it is no okay if they do it. Kids tend to have more germs than adults and can contaminate the meat. Just do not mess with the meat at all.