Yes, the only time this can be incorrect is if you scale a material using the SketchUp scale tool.
Why? Because materials are like balloons. You can stretch a balloon from 20cm to 40cm, yet it’s still one balloon.
In a few cases, if you alter geometry using the Sketchup scale tool instead of push-pull or the parametric functionality of plusSpec, you may find you have incorrect measures. This does not happen in all cases, yet the rule of thumb should be don’t use the Scale tool, as it is bad practice.
I hope that helps