Olives in French Beef Stew
If the recipe said to simmer them slowly with the meat, you might be pleasantly surprised as they could blend in with the other flavors. (Or not, but it might be worth a try with a smaller amount.)

But in the given recipe, a not-so-small amount gets added shortly before the end of the cooking time, which seems intended to keep the original olive flavor (a bit like adding fresh herbs at the end). The flavor of the stew has developed without the olives, a few minutes won’t make a real difference. If you dislike olives on pizza, salad or as appetizer - leave them out.