Sarcasm or Roasting; what is this actually? Is this kind of Bullying

Tweet

In this digital platform, many things are developed in term of softwares, some so called social media, It is not surprise to know or learn that how digital platforms are being used by the creators. There are many good or bad one, depending on your demands. Now recently I have come across roasting term, what I have understood from the channel and video is some kind of mockery someones activity with fun way, and sometimes its looks like its goes beyond the expectation, Sometimes its looks, a person is angry on the other creator and again, its looks like its been done for more subscribers or gaining more viewers. i am not sure how to put it together again. MY understanding about roasting was roasting of meat or any vegetables and a process in metallurgy in which a sulfide ore is heated in air. The process may convert a metal sulfide to a metal oxide or to a free metal according to science. Example: Roasting ZnS may yield ZnO . But Actually roasting is media is something that kind of bullying type again, cyber bullying that too humiliation in public, social media platform. But on the other hand I found, many viewers enjoys it, If this case, Can owner of the roasted creator considering as a credit or defaming in order to develop better. it also said because of this act, some creator get hates or dislikes. Similarly, Sarcasm seems "Ability to insult a person without realizing it". wow what is this. I think, this has been practice normally day by day Now, I am quite doubtful, how you-tubers are taking this levels so as meme creators too What do you say about this act ?