Eating raw puff pastry or other raw dough such as cookie dough, raw flour dough etc is not recommended because there's a potential of getting sick due to bacteria that could be present in the dough.
Still though as a kid I used to eat raw cookie dough and lick cake batter off of spoons and and mixers as well as eat the raw cake mix or raw cookie dough mix out of bowls that was leftover.
I've lived through it and never gotten sick from it.
So you could eat some raw puff pastry, raw cookie dough etc.
But just be aware that you could potentially on a rare chance get sick with salmonella poisoning or other food poisoning.
If you do eat the raw puff pastry and get a sick feeling then go to urgent care your doctor or the emergency room.
So yes you can eat raw puff pastry but it's not recommended because of potential health risks.