>>16772202
>You are telling me there is absolutely nothing else to confirm these "gravity wave detectors" are indeed detecting what we think they are detecting.
Incorrect. For some reason you seem to have forgotten GW170817, which was a binary neutron star merger. Such collisions were hypotheses to be the progenitors of short Gamma Ray Bursts, which have been studied for decades. In the case of GW170817 gamma rays were detected by two satellites seconds after the GW wave event. Using the GW data from the LIGO and Virgo detectors, the collaboration published the positional constant and, critically, the distance to the source purely based on the GW data. The gamma rays tell you nothing about the distance. Hours later a fading kilonova was discovered in galaxy NGC 4993, which is right at the distance estimated by LIGO/Virgo. GW170817 provides independent confirmation that these events are the progenitors of sGRBs and that these gravitational wave signals are real and astronomical.
The close coincidence of the gamma rays and gravitational wave arrival time (within 2 seconds over 140 million lightyears) shows that gravitational waves move at the speed of light, down to a very tight constraint.