I’ve seen it here on FR several times in the battles between the “Constitutional Amendment” folks and the “Overturn Roe” folks. I am surprised that you haven’t seen those arguments.
I guess the original statement seemed too broad to me. Of course some freepers will be critical of this. Some freepers are mad at the world and critical of everything. I don't count them in the definition of the greater pro-life movement. They're an anomole.
IMO, no legitimate pro-lifer will look at this bill with disdain.