I read it but I didn't really get why its so hyped/mindblowing

It may just be a Seinfeld Effect for me though

I get that in the context of literature its quite a unique story/take but I just felt like the concept of life being meaningless/absurd is kind of a tired trope for younger generations

Especially if you are someone who grew up on the internet, depression/meaninglessness was like a mainstream meme in the last decade

It is quite accessible and is read by teenagers during their angst. It appeals to people become it is a simple premise that gives simple choices to the reader.