I'm struggling to follow this discussion.
Press fit bottom brackets can squeak. That is the outcome of metal moving against metal. That generates friction which manifests itself as heat and noise. Basic Laws of Physics. I can just above see the logic, twisted though it is, of using grease as an interface. A door hinge squeaks for exactly the same reasons and a touch of lube stops the noise. Until the lube dissipates and the squeal reappears. Then you reapply lube. It is easy on a door hinge, somewhat more difficult with a bike.
The way to stop the squeak is to stop the friction and the way to stop the friction is to stop the movement. Hence bearing compound. You don't need a lot. Those who say that force enought to break the frame is needed for removal are both using too much compound, your technique is sadly adrift and/or you are riding a frame that is weak to begin with.
The comments attributed to various and always unnamed bike shops that the housing has worn out of shape are hard to believe. If these comments have been made by any experienced machanic then the assumption must be that he simply CBA sorting out the problem.
Then I wonder why Loctite will destroy your frame. Why are you putting loctite on your frame? It is bearing compound to fit between the outer surface of the bearing and the inner surface of the housing. If you are lathering your frame with bearing compound I respectfully suggest that you are better off not doing any bike maintenance at all.
This really is a very simple problem with an equally simple solution. There does appear to be a lot of overthinking taking place. I have had three bikes with press fit BBs. They all squeaked virtually from new. They never squeaked when the bearings were fitted properly. Manufacturers don't do it for reasons of economy. LBS don't do it on PDI using the ostrich principle.
QED.
