Review Detail of JexRekk in The Daily Life of the Immortal King

Is the damn author confused af??? This is basically a futuristic version of Saiki K. But just can't even get the setting right. What do I mean? I forgot the actual time but it should be like year 4,XXX. But why does the author use jokes referring back to 21st century? I'm dumbfounded over this bc the immortals should be at 2k year old but they surely must experience more knowledge and culture right? Also, the green dog fools a group by saying a japanese woman was behind them but that person existed in the 21st century and she ded. Plus how did that demon king know and why tf does smartphone still not improve? Grenade throwing senior immortal has his chat forum crashed which I am just pissed at bc at the rate technology should be growing, the forum shudn't crash. The author is jusr putting 21st century pop culture references in a setting which is supposedly far in the future. Granted, this could be a parody novel. Also the character development is basically like Saiki, NO KIDDING! Wish Wang Ling acted less like Saiki by talking more and get a girl. This introverted ***** ass... anways the story is fun to read dispite the bad setting which even a frickin middle schooler could've made better. LIKE WHY IS THERE NO FLYING CAR 2K YEARS LATER? DID HUMANITY WENT AUTISTIC AND CAUSE DEVELOPMENT TO SLOW DOWN TO A SNAIL'S PACE?