DEAR MISS MANNERS: Returning to the United States after several years of living in Europe, I have noticed that “athleisure” wear is acceptable everywhere, and that wearing baseball hats in restaurants (done by people of all ages, races and genders) is now okay too. What happened? Can we blame COVID for this, too? Do I just need to get over myself and not judge others so harshly? I feel like this should not bother me so much, but it strikes a nerve. GENTLE READER: A number of things have happened, including these notions gaining dominance: The desire for comfort. We all sympathize with this. Bu…