One reason could be Naruto's recklessness. In fanfiction, Naruto might do something extremely dangerous without thinking, and Sakura, being worried about his safety, yells at him. For example, if he decides to take on a powerful enemy alone without a proper plan.
In the fanfiction, Naruto's parents yelling at Sakura could be a turning point. It could make Sakura question her place in Naruto's life. For example, she might think that she is not good enough for Naruto or that his family will never accept her. On the other hand, it could also make Naruto realize how important Sakura is to him and he might stand up to his parents to defend her, which would show a new side of their relationship.
It might also create a rift within their group. If their friends witness Naruto yelling at Sakura, it could cause tension among the whole group. Some might side with Naruto, thinking Sakura deserved it, while others might defend Sakura, leading to a divided group dynamic in the fanfiction.
It might create a rift between them. If Naruto feels that Sakura is always nagging and yelling, he could start to avoid her. In some fanfictions, this could lead to a period of estrangement where they don't work well together as a team. For example, Naruto might choose to go on solo missions instead.
The bellhop could have been yelling because he was caught up in the intense and confusing situation, trying to make sense of it or get someone's attention.
In 'yelling ryan the oc fanfiction', the character Ryan's yelling could be a central theme. It could be used to drive the plot forward, for example, his yelling might cause conflicts or revelations. Since it's fanfiction, the author might also explore different relationships for Ryan. The OC aspect could mean that new settings or side characters are introduced to enhance the story around Ryan's yelling.
The 'woman yelling at cat' originated from a viral meme. There was a photo of a woman yelling angrily at a confused - looking cat. People found it hilarious and started creating various captions and remixes, which then spread like wildfire across the internet.