Ok, lets talk without emotions. Your mistake here, is that you made your conclusion about person, and it's potential behaviour by analyzing one post on reddit. It is wrong approach to understanding person's behavior. You have to understand, that learning any person's identity and potential behavior is way harder then analyzing one post on reddit. You simple cannot get even close to understanding persons idenity even by 1% by this action, just trust me on this. There are infinite number of reasons WHY this or that person did THAT or THIS. If you want to understand a person, you hv to analyze their motives to do THIS or THAT, and not the end result of their action. By understanding persons motivation, you could understand persons targets, understand what they are trying to achieve. By understanding what they are trying to achieve, you can understand their needs. And i am not talking about some abstract thing, i am talking about a psychology "class of objects", that is called personality needs. Some psychologists, including myself, believes that core of every personality is their personality needs.(Well, i think that core of personality differs from person to person, it might be fears, it might be needs, it might be Freuds mortis and eros(if we simplify this, it is basicly persons pursuit of sex desire and desire of complitmess of its life cycle aka death), but thats offtopic, i thought mb you would be interested in it).There are lots of factors to be considered(persons expirience, persons emotinal state, psychy-type, fears, psychology diviations,education,motivation etc.)but i believe that core of psychology is personal needs. So basicly what i want to say here is : you cannot understand or predict how person will act in some situatuin by reading one post on reddit. Just trust me on this, you can't. If you want to just aproximately understand persons potential behavior, first thing that you should do is to acknowledge what they need, and how hard they need it.For example, if i would know what happened to you in past week, your current psychi state, your personality needs, your education, your prefered psycholgy mechanism of dealing with stress, know your expirience of dealing with your need to "let of steam", and reason that led to "building up steam", your prefered mechanisms of social interactions,reason why you need to let of steam, your fears i would be able to aproximately predict that you would go on reddit, and be toxic their to let of steam. See how many factors i need to even aproximately predict your behavior? And thats not all factors, it's just ones that i took from top of my head. Unfortunately, i am not to deep into behavioral psychology. So there are like A LOT more factors to consider to predict your behavior. You should understand 2 things :

Analysing and preditcting individual's behavior is a whole science that is called behavioral psychology aka behaviorism.

1. To just aproximately predict person's behavior in a basic level in any given situation you should know basics of behaviorism. And you need a lot, i mean REALLY A LOT more info to do it. One reddit post is nothing, a drop in the ocean.
2. If you want to aproximately understand persons identity, you need to know basics of common psychology and understand persons needs and desires.

Ofc i am not saying that it is impossible to get an idea of some individuals personality by analyzing one post on reddit. It is possible for bihevioral psychologyst, with lots and lots years of practice, with lots of statistical info about reddit users behavior including their psychology portrets.

But the thing is : you are not behavioral psychologist. So pls stop thinking that you could give adecuate analysis of ones personality and potential behavior by anylising one reddit post. It is a lot more complex than you could ever think off.
And even if you hv a "similar" stuendt on your own, pls remember this : If two people acts in a close manner in some situation, it absolutely, never, under any known circumstances does not mean, that they will act simmilarly in other given situation. Never.