You self scoped the question as “universe” and any field, subjective or absolute, where 3/4 of your hard problem stuff is unidentified, probably disqualifies you as a generalist expert so I think physics are the furthest from tautology as the universe and our existence can get.
It would be like a coder saying his codebase is 3/4 missing, let alone the runtime, OS, processor, being completely speculative, but then claiming to be an expert matter on computing.
No, you might very well be a micro expert relative to other micro experts in your small corner of your codebase, but on the universe of existence at large?
Perhaps some respect and humility to the whole process are due. ;)