Meh, TTY bolts (which the bed bolts are not ) normal can be used 3 times. But do you take that chance on a $2500+++ head gasket job?????
Other bolts like bed bolts that are deemed one time use only are another story.
It is my understanding/believe that there was a point in the service manual that "lock-tite" was "required" / "recommended " on some fasteners.
Due to a law suit, where said thread adhesive was not applied, accident happened and manufacturer (FoMoCo, GM , Toyota, doesn't not matter) was sued and lost, the manufacturer then became liable. So now service manuals say bolts must be replaced. New bolts have thread locker preapplied.
This way if a bolt is not replaced the liability now turns to repair facility.
Most bolts can be reused, just apply thread adhesive, but again my lawyer we tell me to tell you " do so at your own risk"