Let’s say I decide to go to a nice restaurant for a meal. The dish comes out, and I ask for a salt shaker before I even taste it (I never have, btw). That is normally considered an insult to the chef or you are pegged as a neanderthal diner.
Why, then, is it normal for a waiter to offer you grinds of pepper all over your plate before you have even had your first bite?
Because whether the chef will be insulted or not (They won’t) - everyone has different tastes and some people love a dash of pepper on things.