If you have no inverter and are running lights, boost or buck units etc. forget about matching cable lengths.
If you have a single properly designed inverter with sufficient internal capacitance, forget about matching cable lengths.
If you have multiple parallel inverters with a poor design and non isolated communication links between inverters then basic cable length imbalance can be a massive issue because it will crate a DC offset in the communication links, potentially ending up with the wrong level being sent between inverters resulting in oscillation or incorrect overall output level, as happens with some.
I fail to see, techincally, how any small inline cable inductance for a properly designed inverter would cause any form of damage as the inductance on a relative basis is extremerly small, and probably not detectable with the average digital multimeter. The ripple caused by the battery resistance will normally be at least an order of magnitude larger.
Lets take a 2m length (imbalance) of 30mm2 cable (6mm diameter) carrying 100A pulsed at 100Hz (as would be seen by the battery if there where no smooting capacitors at all in an inverter - really bad design that even the Chinese are yet to match).
The inductance of that cable is then 2.58uH
https://www.eeweb.com/tools/wire-inductance
Next up we apply the formula to work out the effective resistance
2 x PI x L x f = 2 x 3.141 x 0.00000258H x 100Hz = 0.00162 Ohms
Applying a 100A peak current the resulting voltage is 0.162 Volts and dont forget this is also out of phase... !!!!!!
If you share a common -ve return path between connected electronics (fed by different power cables) and there is a DC bias between the -ve lines then this "may" create problems for the electronics involved if the bias is large enough. On typical small wires at currents in the order of 1Athe bias can effectively be treated as zero. Start moving 50A around and it shows up.
Inductance, treat as zero, unless proven otherwise.