Yes, even changing a bulb modifies the characteristics of a circuit if it doesn't draw exactly the same amperage as the original.
If you changed the bulb out to one that drew the exact same amperage, you haven't changed the characteristics of the circuit itself,,,you've only changed what was attached to the circuit.
That's why this issue could go on and on,,,,,
JAP>
By that token, if you changed all the appliances in a kitchen, you would have to comply with the requirement.
And on, and on...