I love smaller, in fact, I prefer it to larger any day. But what I don't like is someone who just brusquely shoves it in. Shows inexperience and lack of regard for your partner. Now if it was pre-agreed upon to be rough, that's another thing altogether.
Several things of interest: He's totally inexperienced and it shows, how embarrassing for him. That's why he came too quickly. He's faced with a female who wants anal and he's not able to hold himself back and even says as much. He says how tight she is, that he needs lube, which he applies before crudely shoving it into her anus, causing her to wince in discomfort multiple times. What an amateur! Now as a Bisexual male, I find his penis size very attractive and ideal for oral & anal sex, but I wouldn't want him plowing into my small asshole so brusquely.