It seems like "roboteching" refers more to the sudden synchronised turning of the missiles towards the target, and "Itano Circus" / "Macross Missile Massacre" is the general term for near-simultaneous missile spam. Definitely very aesthetically pleasing. https://tvtropes.org/pmwiki/pmwiki.php/Main/MacrossMissileMa...
Itano Circus is about the entire choreography of the entire fighting sequence, more than the missiles but combined with unrealistically agile robot actions and dynamic camera placing/movement.
