I have the css import in the child theme but you know, I agree I am probably way too often checking my site on GTmetrix … ha… but everything which can slow down and be easily fixed is good anyway.
Now may be it is child theme plugin which creates that?
I tested on a test site the child theme (top) changed
It did not break anything.
I don’t know if it helps much but that’s following the GTmetrix stuffs that says “Using CSS @import in an external stylesheet can add additional delays during the loading of a web page”
You gonna think I am a maniac…yes, I am really trying hard to make my sites as user friendly as possible but I have to emphasize again that your themes are one of the lightest and again, the absolute best for responsive out there so don’t take offense..ha..