Did I? Interesting. Do you take everything you read literally? Ok...let me try this again so you don't get confused.You stated it as a fact not an opinion.
"IN MY OPINION" Pogba does his little stutter so he can try and have his own little signature move.
(now pay attention because this is where I explain why I think that)
The reason I think that is because those little slow steps do absolutely nothing to throw off the keeper. If anything, it makes it easier for the keeper to time his dive because of how slow he's going. So if it doesn't help make his penalty harder to save, and it's something that I have only seen him do, what other kind of conclusion (or opinion) would you like me to come to??? It's not like Pogba is a humble player who wouldn't want to do something to make him stand out...