Wait what?
First of all no one said that but even if it was true, how does breaking stone hurt Pica lmao? Aokiji who is a logia has a logia body too and you can break his logia body yet his real body wouldn't take his damage?
Secondly no one said that, I just said while Pica himself is somewhere in the Golem, his DF property allows him to scatter his position throughout the Golem, that is the reason why he can see through those eyes. The only otherway its possible is if he is right behind those eyes and it was clearly not what was shown when Zoro disected Pica.
Literally no one mentioned life force, what the fuck are you even on about