Their mental gymnastics are just on another level.

First Claim:

So, here he is referring to seminal fluids present in the abdominal. The seminal vesicles are located in the pelvis superior to the rectum, inferior to the fundus of the bladder and posterior to the prostate.

How it is related to backbone???

Tafsir wise :

خُلِقَ مِن مَّآءٍ دَافِقٍ (He is created from a water gushing forth.) meaning, the sexual fluid that comes out bursting forth from the man and the woman. Thus, the child is produced from both of them by the permission of Allah. Due to this Allah says, يَخْرُجُ مِن بَيْنِ الصُّلْبِ وَالتَّرَآئِبِ (Proceeding from between the backbone and the ribs.) meaning, the backbone (or loins) of the man and the ribs of the woman, which is referring to her chest. Shabib bin Bishr reported from Ikrimah who narrated from IbnAbbas that he said, يَخْرُجُ مِن بَيْنِ الصُّلْبِ وَالتَّرَآئِبِ (Proceeding from between the backbone and the ribs.) "The backbone of the man and the ribs of the woman. It (the fluid) is yellow and fine in texture. The child will not be born except from both of them (i.e., their sexual fluids.)

The Tafsirs isn't referring what he is saying, feel free to find any other flaw in the argument and after Tafsir I don't think so it is required to debunk second claim. "Man emerging from backbone". Please help to find more flaws the way they are expert to make things as a miracle is amazing. 😂