> The AdS theory doesn't include the standard model
I never said AdS includes standard model?
> The N=4 theory doesn't even have particles
Yang Mills is a super symmetric CFT used as a toy model for other super symmetric models (which do have super partners; Yang Mills informs us about our real world only in as much as it informs us about other supersymmetric CFTs).
> Their utility is that they can give us concrete demonstrations of various conjectures about gravity, holography, and gauge theories.
Sure, but there is significant concern about how meaningful those demonstrations are since the theories that are most similar to the toy examples are themselves probably dead ends.
I never said AdS includes standard model?
> The N=4 theory doesn't even have particles
Yang Mills is a super symmetric CFT used as a toy model for other super symmetric models (which do have super partners; Yang Mills informs us about our real world only in as much as it informs us about other supersymmetric CFTs).
> Their utility is that they can give us concrete demonstrations of various conjectures about gravity, holography, and gauge theories.
Sure, but there is significant concern about how meaningful those demonstrations are since the theories that are most similar to the toy examples are themselves probably dead ends.