Significantly, this claim does not appear to be based on any actual research based evidence, but instead from a trend identified by lawyers from their own experiences. Whilst any patterns noticed by individual lawyers can be of interest, it would be wrong to extrapolate that into some larger social trend without something more substantive in support, let alone claim it as fact.
Gaslighting, the act of manipulating someone by psychological means into doubting their own sanity, was named after a play and subsequent movie where a husband convinces his wife she is going mad by gradually dimming the lights, whilst telling her it is only her who thinks the lights are flickering.
Of course, eventually I would succeed, and far from the life downgrade I feared, the opposite happened. My success wasn't a fluke, it didn't happen overnight, it wasn't a result of willpower nor did I live in a hut in the woods for two years. In fact, there were three deliberate stages to it and I've shared them below.