The whole talk about "wave function collapse" originated from the beginnings of quantum mechanics where the measurement process was poorly understood, in my opinion it should be replaced by the modern understanding, in which a measurement is a combination of an entanglement process between the system under test and a large external system, followed by decoherence caused by the many degrees of freedom of the external system. That produces wave form collapse, but it's not an abrupt or absolute process but rather a continuous, controllable one.