The TS very specifically asked about ground loops. The Post #5 does not have any ground loops in either situation shown. The issue being addressed there is not a ground loop, but rather ground bounce.apples and oranges, we see this very differently. (picture of grounds in post #5)
I would never have thought that reducing ground and power resistance would increase ground current measurably. The current is a function of the load not a function of ground resistance. Even if the current went up by 0.1% the greatly reduced resistance would cause the induced voltage to be much smaller. Ohms law give me the idea that as resistance approaches zero the voltage approaches zero and thus less effect.
You must be talking AC not DC.
I have never added resistors and inductors to grounds. I have added inductors to power and data lines to isolate RF noise.
To try to support your point, I have used common mode chokes on power lines and long runs of cables, to keep RF off the wires. In these cases the "grounds" have a area or length greater than 1/4 wave length and I am not fighting ground resistance but ground inductance or impedance at 100s of MHz or ghz. Even in this case lowering ground resistance from 0.1 ohm to 0.01 ohm will not measurably change the current in grounds.
When you have added inductors to power and data lines (and you can also add them to ground lines, as well, but you need to be more careful if you are using single-ended signals referred to the system common) you are doing exactly what I described, increasing the resistance (impedance) at the offending frequency in order to reduce the interfering currents at that frequency.
EDIT: Fix typo.