I'm not sure this is true for most of the people in Class 1-A, but it's apparent with Izuku that the two have a very toxic relationship. Izuku looks up to Bakugo for being awesome (which, in the sense of abilities, skills, and execution, he is), yet is too afraid to stand up for himself around the explosive teen. Bakugo, though, is WAY overconfident, and believes he can get away with anything, even in relationships. Since the two used to be good friends, Izuku can't let go of Bakugo, and Bakugo often finds Izuku to be a good "friend" because he's so subservient. I guess this is why it infuriates Bakugo when Izuku manages to do something better than he can, as his perceived rank as the alpha male is being challenged.



As for the other people, they might just be too scared of him to do anything but kiss up to him to make sure they don't get on his bad side, although we're starting to see signs that this is changing.