Absolute in the sense that a specific distance is covered in specific time on specific warp factor, and this does not change.
And that distances is measured relative to... what?
The dialogue always treats warp factors like this.
Dialog often treats "energy" as if it is a physical substance that can be created or destroyed. I'd chalk that up to imprecision of the English language before any engineering convention.
See, here's the thing that bugs me so much about how "modern physics" is taught, and has been for some time.
We don't KNOW that there is no such thing as some absolute frame-of-reference, nor if there's some "fabric of space" that may be in movement relative to some other region of the "cloth" against which we measure all "local" velocities and so forth.
We have some simple math that represents, pretty accurately, what little we have experienced, and which has led us to make some correct extrapolations (and a whole lot of unsubstantiated extrapolations).
It's ... "hazardous"... to start making absolute statements like "there is no such thing as an absolute frame of reference." All we can say for certain is that the (flawed, but useful) mathematical approximations we currently have don't have any "central frame" incorporated in them.
Doesn't mean that the universe is driven by our math. Our math is only our best effort to approximate the universe. And our math is always, inherently, only an approximation.
Could there be some "absolute frame of reference?" Absolutely... there is NO reason to believe otherwise. Could there be "relative to the moving fabric of the universe" frames of reference? Absolutely.
Let's not pretend we know more than we really do. That's where we always get into trouble. Just like, centuries ago, people were just dead certain that they knew that the Earth was at the center of the cosmos.
We, as a species, haven't changed one iota since then. We have more knowledge... but compared to the amount of information available in the universe, or even just in our own little corner of it, we've barely scratched the surface.
We're still largely ignorant of the "intimate workings" of reality, and we're still arrogant enough to pretend we know "everything we need to know." Some things never change.
