Perhaps you don't understand what a "theory" is. TToE is supported by evidence (and all the more so since the DNA genome was exposed). It doesn't require abiogeensis (which is a different theory), nor does it require observation (although we do have direct observation of micro-evolution).
Seeing something fall down is not proof of the Theory of Gravity.
"TToE is supported by evidence"
Yawn. . .
"It doesn't require abiogeensis"
Duh. I know that. I never mentioned [sic] 'abiogeensis'.
"nor does it require observation (although we do have direct observation of micro-evolution)."
Yeah, that's the whole point. No one argues about what we have direct observation of.