HI Genebujold

You said the following.
You're missing the point, snowflake - if one point of the spring is stretched, all points of the spring are stretched, including those which you conveniently reference your criteria.

You are right, a uniform “stretch” maintains relative measures, but from our “absolute” perspective it is possible to observe the stretching of the spring. There are two measures of realty, “absolute” and “relative” local measures are relative and all relative measures remaing the same, relative measures of distance and all relative clocks. From the absolute perspective change is observed, lengths proportionally increase and clocks slow.

It seems that we share some common ground in that you “do not believe the variances in our backyard are universally propagated” , I am providing a model that conforms to you intuition.

Snowflake