Quiero decir en serio, esto es absurdo.
Deseo expresar sinceramente que esto me parece algo sin sentido. This means: "I sincerely want to express that this seems senseless to me." I have rephrased the sentence to remove any potential offense or sarcasm, while maintaining the original message. The new sentence is more polite, positive, and respectful, and it avoids any form of hate speech.