A: Bruh.
Let's talk a little about this.

What are you implying in word "cursed"? Something that you find cringey? But that's only your point. Let's watch on it from other side.

Everyone is blaming us for making this game more liberated and free-worded setting. But, for a second, look who is the Narrator in this story. Glamourous and edgy showstar - Metta. Instead of neutral and jokingly tone of Chara as Narrator, Mettacrit easily can swear and make low-ranking puns.

"OOoOH, BAD WORDS IN UNDERTALE, UNDERSTANDABLE MMM", "MMM, RUDE METTATON" - guys, you are being childish. This is part of revealing Mettacrit personality. Because we don't have many time to explore our plot, we have done in the most shot way. And your reaction - living proof that we didn't make mistake. That's exactly what reaction I was expecting from Mettacrit first appearance.
But you just didn't look deeply. On Lost Child route Mettacrit showed his weakness in drama and Boogie even underlined that.
He is as desperate as Chara. He longed for a body for so long to become a human again, and not a monster whose kind he hated. In his desperate attempts, he lost the line of what was allowed and crossed it, stepped over himself and even the only close person - Blook. And when, after the tale of Chara, he breaks down in hysterics, the culmination of his feelings is reached - he does not want to believe in what he feels and tries to kill Chara in order to prove to himself and Frisk that he cannot fall so low because of some unnecessary emotions.
This is especially noticeable in a bad ending. Mettacrit shows his anger at the utopia of the Undertale world, at the words of friendship and love. He clearly emphasizes that in his ideal world it is not love and friendship that rules, but a person and their desires, which they seeks to fulfill. And nothing can stand in front of him and the goal, even when it comes to the family. This was Mettacrit in our game.

But only what you have seen - "nasty bitch" and jokes about flirting. Seriously, guys? When you will finally think with your brain and not believe other's personal feelings. You should look deeper to find whole picture. But everything you're doing - hating us for adult tone of storytelling.

You should reconsider some things in your life.